| An Investigation Into the Feasibility of Using a Modern Gravity Gradient Instrument for Passive Aircraft Navigation and Terrain Avoidance |
Mar-2009 |
180 pages |
| Authors:
Marshall M Rogers; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
 | Recently, Gravity Gradient Instruments (GGIs) - devices which measure the spatial derivatives of gravity, have improved remarkably due to development of accelerometer technologies. Specialized GGIs are currently flown on aircraft for geological purposes in the mining industries. As such, gravity gradient data is recorded in flight and detailed gradient maps are created after post mission processing. These maps, if stored in a database onboard an aircraft and combined with a ... |
|
| Satellite Navigation Backup Study |
19-Sep-2007 |
179 pages |
| Authors:
ITT ADVANCED ENGINEERING AND SCIENCES HERNDON VA
|
| The Joint Planning and Development Office (JPDO) manages a unique public/private partnership in developing a sweeping vision that will guide the evolution of the National Air Space (NAS) to meet the needs of the 21st century. This initiative, called the Next Generation Air Transportation System (NextGen), will bring transformation to the U.S. air transportation system by 2025. A key capability for transforming the NAS is satellite-based navigation (SatNav). Modernization plans ... |
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| All Source Adaptive Fusion for Aided Navigation in Non-GPS Environment |
APR 2007 |
|
| Authors:
Timothy J. Klausutis; Ric Wehling; Matthew Lames; Omar Aboutalib; Bruce Awalt; Alex Fund; Bea Thai; Jeremy Leibs; NORTHROP GRUMMAN CORP EL SEGUNDO CA INTEGRATED SYSTEMS
|
 | An innovative approach for navigation in non-GPS environment is presented based on all source adaptive fusion of any available information encompassing passive imaging data, digital elevation terrain data, IMU/GPS, altimeters, and star tracker. The approach provides continuous navigation through non-GPS environment and yields an improved navigation in the presence of GPS. The approach also provides reduced target location error and moving target indication. |
|
| Stochastic Constraints for Fast Image Correspondence Search with Uncertain Terrain Model |
2007 |
9 pages |
| Authors:
Michael Veth; John Raquet; Meir Pachter; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| The navigation state (position, velocity, and attitude) can be determined using optical measurements from an imaging sensor pointed toward the ground. Extracting navigation information from an image sequence depends on tracking the location of stationary objects in multiple images, which is generally termed the correspondence problem. This is an active area of research and many algorithms exist which attempt to solve this problem by identifying a unique feature in one ... |
|
| Flight Display Integration |
OCT 2006 |
64 pages |
| Authors:
Guy A. French; Darrel G. Hopper; John M. Reising; Michael P. Snow; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN EFFECTIVENESS DIRECTORATE
|
| This report begins with a discussion of the analysis of the human and display factors relevant to synthetic vision in a military cockpit environment. It then describes the results of studies examining the impact of synthetic vision displays on pilot situation awareness and workload. Concluding remarks on additional factors affecting the use of synthetic vision and a future concept for its implementation are described. |
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| Optimal Geometric Deployment of a Ground Based Pseudolite Navigation System to Track a Landing Aircraft |
JUN 2006 |
127 pages |
| Authors:
Matthew P. Crawford; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| With much of the military and civilian communities becoming dependent on GPS technology to navigate it has become imperative that the navigation systems be tested in situations in which GPS does not work. This testing is especially necessary for precise tasks such as landing an aircraft. Currently, research is being conducted into using a pseudolite-based reference system to use as a truth model for the GPS jamming test. Pseudolite systems ... |
|
| Integrating Mission, Robot Localization and Communication Requirements Through Collaboration |
06 MAY 2005 |
8 pages |
| Authors:
Charles L. Ortiz; SRI INTERNATIONAL MENLO PARK CA ARTIFICIAL INTELLIGENCE CENTER
|
| To develop a de-centralized system for allocating mobile sensor assets controlled by teams of autonomous air vehicle (AVs) and deployed in spatially complex urban environments. The sensor assets are to support AV missions involving the pursuit of one or more mobile intelligent ground adversaries. Since sensor information is typically uncertain and incomplete, AVs must be able to cooperate to coordinate sensor assignments in the most efficient way possible. The environments ... |
|
| See and Avoid Sensor System Design Part 2 - System Reliability & Cost/ Benefits |
2003 |
|
| Authors:
Won-Zon Chen; Eric Portilla; Bruce Clough; Thomas J. Molnar; NORTHROP GRUMMAN CORP EL SEGUNDO CA INTEGRATED SYSTEMS
|
| Under the USAF-sponsored Autonomous Flight Control Sensing Technologies (AFCST) program, Northrop Grumman investigated "see and avoid" (S&A) sensing requirements and preferred system designs along with other military scenarios such as autonomous formation flight and visual landing for future advanced unmanned air vehicles (UAVs). In the first part of the two-paper series, an S&A sensor coverage assessment method and the associated field-of- view (FOV) and time-to-go (TTG) modeling tools developed are ... |
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| Autonomous Flight Control Sensing Technology (AFCST) Program Phase I - Capability Goals and Sensing Requirements |
JUL 2002 |
22 pages |
| Authors:
Won-Zon Chen; Thomas J. Molnar; NORTHROP GRUMMAN CORP EL SEGUNDO CA AIR COMBAT SYSTEMS
|
| Lack of pilot vision and the resulting poor situational awareness has been a major limiting factor for unmanned air vehicles (UAVs) in terms of capability and safety. Tactical situation assessment includes evaluating such critical factors as weather, conflicting traffic, targets/threats and their locations, and perceiving spatial relationships to maintain formation or guide the aircraft through approach, landing, and subsequent terminal area operations. Obviously, this tremendously important capability represents a challenge ... |
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| Helicopter Urban Navigation Training Using Virtual Environments |
JUN 2000 |
149 pages |
| Authors:
George T. Wright Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Helicopter missions are never defined as "...successful navigation to and return from a location." Navigation, in and of itself, is not the mission - it is, however, a skill that all helicopter pilots are expected to master in order to function as pilots. Navigation is a means to an end. Helicopter operations, being inherently expensive and unforgiving of mistakes, are prime candidates for such innovative training ... |
|
| Comparing Text and Graphics in Navigation Display Design |
FEB 2000 |
16 pages |
| Authors:
Kevin W. Williams; FEDERAL AVIATION ADMINISTRATION OKLAHOMA CITY OK CIVIL AEROMEDICAL INST
|
| Thirty-six pilots were tested in a flight simulator on their ability to decide which of two airports was farther from a storm front, based on the manner in which information was presented on a navigational display. The results support the superiority of graphical over textual information display of nearest airport information. Pilots were significantly faster using the map display than using either the text-only display or the enhanced- ... |
|
| Wide Area Augmentation System (WAAS) |
Dec-1999 |
6 pages |
| Authors:
D Ormand; RAYTHEON SYSTEMS CO FULLERTON CA
|
| Global Positioning System (GPS) navigation signals alone are not adequate to support aviation navigation. GPS accuracy is acceptable for all but precision approach applications, but integrity, continuity and availability are lacking. Wide Area Augmentation System (WAAS) hardware has been installed and used for testing since last summer. Wide Area Reference Stations receive GPS signals and forward them to Wide Area Master Stations for corrections processing. Augmentation messages are sent to ... |
|
| Development of a Helicopter Vortex Ring State Warning System Through a Moving Map Display Computer |
SEP 1999 |
153 pages |
| Authors:
David J. Varnes; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The need for improved pilot aids has become a high priority item for pilots and aircrews operating at sea and ashore. Pilot aids such as the moving map display, GPWS, collision, and vortex ring state (VRS) warning systems will significantly enhance aircrew situational awareness and safety. Many more of today's aircraft mishaps are a result of pilot error, which includes a loss of situational awareness. ... |
|
| An Interactive Virtual Environment for Training Map-Reading Skill in Helicopter Pilots |
SEP 1999 |
121 pages |
| Authors:
Timothy D. McLean; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Currently, Student Naval Aviators are trained to interpret 1:50,000 scale contour maps by watching VHS videotapes. These tapes show a helicopter moving about twice its normal speed over desert terrain. Primarily due to the lack of interactivity in these videos, students often make mistakes very early in the videotaped flight. The helicopter does not stop until the tape is over, hence, the training evolution quickly ... |
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| Digital Map Technology for GPS-Based Navigation and Terrain Avoidance System |
31 JUL 1999 |
94 pages |
| Authors:
Kimberly L. Dubbs; Robert A. Severino; DUBBS AND SEVERINO IRVINE CA
|
| The U.S. Military has a need for a covert (non-emitting) system that will assist the pilot to navigate using terrain following techniques while maintaining maximum safety against terrain impact. This project addresses the software development and system integration of a GPS-Based terrain avoidance system. The system extrapolates the region immediately ahead of the aircraft and alerts the pilot when the current flight vector intercepts the safety ... |
|
| Closely Supervised Reactive Control of an Uninhabited Aerial Vehicle |
JUN 1999 |
139 pages |
| Authors:
Roy G. Glassco; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
|
| Closely Supervised Reactive Control is an alternative control method for uninhabited aerial vehicles that incorporates some of the benefits of both manual and autonomous operations. Utilizing an onboard camera, an operator can control a UAV by manually choosing desired targets. The flight path of the uninhabited vehicle is determined autonomously from the camera gimbal angles. The operator of the payload (i.e. camera), has close supervision of the aircraft. The aircraft, ... |
|
| Air-Bearing Guided Intercept and Line-of-sight Experiments (AGILE) |
01 APR 1999 |
16 pages |
| Authors:
Lawrence C. Ng; Eric Breitfeller; Arno G. Ledebuhr; Frank A. Handler; LAWRENCE LIVERMORE NATIONAL LAB CA
|
| This paper describes a ground based test and evaluation approach for testing an agile, lightweight, interceptor's performance on a four/five degrees of freedom dynamic air bearing (DAB). The key attribute of this apparatus is that it allows for a rapid turnaround test and evaluation of a fully integrated vehicle's ability to detect, acquire, and track a closing target with real time closed loop altitude control and divert guidance. In addition ... |
|
| Summary of Research 1997, Department of Aeronautics and Astronautics |
JAN 1999 |
60 pages |
| Authors:
Gerald H. Lindsey; Oscar Biblarz; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF AERONAUTICS AND ASTRONAUTICS
|
| This report contains summaries of research projects in the Department of Aeronautics and Astronautics. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, technical reports, and thesis abstracts. |
|
| Global Air Navigation Systems. Volume 2. Detailed Findings |
SEP 1998 |
169 pages |
| Authors:
G. McCall; SCIENTIFIC ADVISORY BOARD (AIR FORCE) WASHINGTON DC
|
| This report presents the detailed findings of the 1997 Air Force Scientific Advisory Board (SAB) study on Global Air Navigation Systems (GANS). Major issues and requirements for GANS are discussed, including capabilities vs. equipment, the impact of GATM noncompliance, technology needs, proposed acquisition and management strategy with the Air Force in leadership role, ground and future service provider infrastructure including ATC, international aspects, liability, demonstrations, datalinks, GPS/INS technical information, and ... |
|
| Guidelines Document: Global Positioning System (GPS) as a Real-Time Flight Safety Data Source |
JUN 1998 |
56 pages |
| Authors:
RANGE COMMANDERS COUNCIL WHITE SANDS MISSILE RANGE NM RANGE SAFETY GROUP
|
| This guidelines document was written specifically to assist flight safety and other range support personnel in implementing GPS as a real time safety data source. However, it also provides information to the range manager who is involved in transitioning a range to GPS and to range users who are considering incorporating GPS as a tracking source on their test vehicles. This document includes a brief ... |
|
| Assessment of CORBA and POSIX.21 Designs for FAA En Route Resectorization |
APR 1998 |
252 pages |
| Authors:
B. Craig Meyers; Daniel R. Plakosh; Patrick R. H. Place; Mark Klein; Rick Kazman; CARNEGIE-MELLON UNIV PITTSBURGH PA
|
| Modernizing the En Route system presents major acquisition issues to the Federal Aviation Administration (FAA). At the present time, efforts are underway to upgrade the En Route system, primarily focusing on the host computer system. Some of the major issues include the following: (1) What are the consequences of using different technologies and products? (2) How can one assess the use of different technologies? Resolving issues such as these will ... |
|
| The Resolution and Performance Effects of Three-Dimensional Display Rotation on Local Guidance and Spatial Awareness Measures |
30 JAN 98 |
104 pages |
| Authors:
Kyle Jason Boeckman; ILLINOIS UNIV AT URBANA
|
| Computer technology has made it possible for the traditional paper map to be replaced with a realistic, three dimensional, easily updated picture of the world. Possibilities abound as to exactly how this new computer map should be designed and implemented for use in aviation. what kinds of tasks should such a map support? Should the map depict the pilot's viewpoint or should the aircraft be viewed from a distance? If ... |
|
| Advances in Flight Testing (les Avancees dans le domaine des essais en vol) |
DEC 97 |
|
| Authors:
ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE)
|
| The Symposium comprised six sessions, each being devoted to a particular field, with one session on Systems Evaluation, including avionics, navigation, propulsion and weapons aspects, two sessions on Technological Advances covering all technical fields such as avionics software, simulation, instrumentation, aerodynamics, test methods etc., one session devoted to an Overview of Current Programme, one session on Flight Dynamics, incorporating handling qualities, performance and flight controls, and one session addressing Management ... |
|
| National Airspace System: Observations on the Wide Area Augmentation System |
OCT 97 |
22 pages |
| Authors:
GENERAL ACCOUNTING OFFICE WASHINGTON DC RESOURCES COMMUNITY AND ECONOMIC DEVE LOPMENT DIV
|
| In the 1980s, FAA began considering how a satellite based navigation system could eventually replace the ground based system that had long provided navigation guidance to aviation. In August 1995, after years of study and research, FAA contracted with Wilcox Electric to develop WAAS. However, because of concerns about the contractor's performance, FAA terminated the contract in April 1996. In May 1996, the agency entered into an interim contract with ... |
|
| Incorporation of a Differential Positioning System (DGPS) in the control of An Unmanned Aerial Vehicle (UAV) for Precise Navigation in the Local Tangent Plane (LTP) |
MAR 97 |
74 pages |
| Authors:
Peyton M. Allen; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The purpose of this thesis is to incorporate the Global Positioning System (UPS) and Inertial Navigation System (INS), for the guidance of an unmanned aerial vehicle (UAV) seeking precise navigation in a Local Tangent Plane (LTP). By applying the Differential Positioning technique, UPS position data becomes more accurate. This position can then be referenced to a known location on the ground in order to give the aircraft's position in the ... |
|
| Looking Towards the Future Air Navigation System: Will Free Flight Hamper Global Reach? |
NOV 96 |
45 pages |
| Authors:
Joe C. Herron; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| Budget constraints are forcing prioritization on future spending for Air Mobility Command's weapon systems. As the airplanes age, some of the parts that are worn out become too expensive to replace. Modernization of avionics and communication packages are becoming a necessity based on the rapid implementation of the Future Air Navigation System (FANS) and Free Flight. The purpose of this study is to understand how the implementation of FANS will ... |
|
| United States Standard Flight Inspection Manual |
MAY 1996 |
269 pages |
| Authors:
FEDERAL AVIATION ADMINISTRATION WASHINGTON DC
|
| The purpose of this manual is to prescribe standardized procedures for the flight inspection of air navigation services. It is not intended as authorization for an agency to assume flight inspection authority over any group of services which are not now under its jurisdiction. Similarly, it carries no designation of responsibility within any agency unless such has been so designated in its usual procedural manner, such ... |
|
| Design and Analysis of a Navigation System Using the Federated Filter |
DEC 95 |
124 pages |
| Authors:
Stephen J. Delory; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| The purpose of this paper was to design and analyse a federated filter design, to be used for retrofit of an Embedded GPS/INS (EGI) navigation unit into an existing Kalman filter-based air navigation system. A design was selected and simulations were conducted in the Distributed Kalman Filter Simulation software (DKFSIM). As well, a centralized Kalman filter design was simulated under identical conditions for comparison purposes. The federated filter was shown ... |
|
| National Simulation Capability Reduced Vertical Separation Minima. Phase I. Result Report |
AUG 95 |
83 pages |
| Authors:
Diena Seeger; R. Roske-Hofstrand; FEDERAL AVIATION ADMINISTRATION TECHNICAL CENTER ATLANTIC CITY NJ
|
| The Reduced Vertical Separation Minima (RVSM) experiment resulted from the North Atlantic (NAT) System Planning Group's conclusion to carry out studies aimed at achieving early implementation of RVSM in the NAT Region. RVSM is an approved International Civil Aviation Organization concept to reduce aircraft vertical separation from the Conventional Vertical Separation Minima (CVSM) of 2,000 feet to 1,000 feet. This reduction occurs between flight level 290 to 410, within a ... |
|
| Design Study for Passive Sensor Altitude and Terrain Awareness System |
JUN 95 |
120 pages |
| Authors:
Adam X. Miao; Greg L. Zacharias; CHARLES RIVER ANALYTICS INC CAMBRIDGE MA
|
| This Phase II effort completed the successful enhancement, implementation, and demonstration of the passive sensor Altitude and Terrain Awareness System (ATAS) operation using both computer generated and real imagery. The products of this effort include: (1) a test bed and an overall architecture of ATAS that comprises both the real-time image generation and real-time egomotion and terrain shape estimation; and (2) hardware and software specifications for a real-time flight rated ... |
|
| An Analysis of the Digital Data Communications Link Required for the Automatic Dependent Surveillance System Concept and the Airborne Applications of the Global Positioning System |
JUN 95 |
96 pages |
| Authors:
Gustavo A. Anaya; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| Significant changes will be occurring in the next ten years regarding air navigation and aircraft surveillance. The Global Positioning System, a worldwide satellite-based radionavigation system which provides positioning, navigation, and time information, has emerged as a reliable and incredibly precise means of air navigation which has seen widespread acceptance around the world. With GPS, aircraft can determine their position much more accurately than is possible with ground radar surveillance systems. ... |
|
| Conceptual Design of a Map Interactive System for Military Aircraft Cockpits |
DEC 94 |
103 pages |
| Authors:
Craig J. Wenz; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| As the complexity and sophistication of military aviation operations rise, the effective interaction and display of map information becomes increasingly important. The purpose of this thesis is to provide a background and directions for those developing new technology in the area of air navigation and to propose a conceptual design of a Map Interactive System (MIS) for military aircraft cockpits. The MIS is an air navigation system that will provide ... |
|
| Design and Synthesis of a Real-Time Controller for an Unmanned Air Vehicle |
SEP 94 |
121 pages |
| Authors:
Peter M. Hoffman; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Naval Postgraduate School is developing an vertical take-off and landing (VTOL) unmanned air vehicle (UAV) that can transition to horizontal flight, once airborne, in order to take advantage of the improvements in speed, range, and loiter time that horizontal, fixed-wing flight provides. This research investigates the design requirements of the central controlling device for that UAV, including the specific problems of defining the necessary hardware components and developing software ... |
|
| Pointing and Tracking Systems (Systemes d'Acquisition et de Poursuite automatiques) |
MAY 94 |
|
| Authors:
ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)
|
| Pointing and tracking systems form the core elements of the majority of gun fire control and surveillance and tracking sensors. In many cases the requirements of hit-to-kill weapons and extremely long-range EO imaging and tracking systems require pointing accuracies measured in micro-radians. Maintaining such precision in optical systems has introduced the need for adaptive optics and highly stabilized mechanical mounts and actuators. In terms of man-in-the-loop weapon systems, the use ... |
|
| VHF Direction Finder (VDF) Operational Test and Evaluation (OT&E) integration and OT&E Operational Test Report |
MAY 94 |
32 pages |
| Authors:
Eugene Barto; Robert Bernheisel; John Dyson; Joseph Pino; FEDERAL AVIATION ADMINISTRATION TECHNICAL CENTER ATLANTIC CITY NJ
|
| This report provides the results of the Operational Test and Evaluation (OT&E) Integration and OT&E Operational testing that was conducted on the new FA-10121 Very High Frequency (VHF) Direction Finder (VDF) at the Green Bay, WI, Automated Flight Service Station (AFSS). It covers testing accomplished to verify that the system meets the requirements identified in the Direction Finder (DF) Test Verification Requirements Traceability Matrix (TVRTM) from the OT&E Integration and ... |
|
| A PC-Based Interactive Simulation of the F-111C Pave Tack System and Related Sensor, Avionics and Aircraft Aspects |
MAR 1994 |
|
| Authors:
David A. Fogg; Mike Davies; Fred D. Bowden; Ray Janus; ELECTRONICS RESEARCH LAB SALISBURY (AUSTRALIA)
|
| Pave Tack is an all weather, day and night, navigation and weapon delivery system fitted to the F-111C aircraft. A PC-based, interactive digital computer simulation has been written which can be used to assess the performance of the Pave Tack system and also as a computer-aided training device. In forming the simulation, it was necessary to model a number of avionics and sensor aspects and an F-111C flight path generator ... |
|
| Design of a GPS Aided Guidance Navigation, and Control System for Trajectory Control of an Air Vehicle |
MAR 94 |
118 pages |
| Authors:
Eric N. Hallberg; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The advent of GPS has afforded the aerospace controls engineer a powerful, new means of controlling air vehicles This work explores a new method of designing and implementing controllers and guidance systems for autonomous control of air vehicles utilizing a GPS integrated guidance, navigation and control system. This is a subject of considerable interest when realizing controllers to track reference trajectories given in an inertial reference frame. The design, implementation, ... |
|
| Federal Aviation Administration Plan for Research, Engineering and Development 1993 |
FEB 94 |
198 pages |
| Authors:
FEDERAL AVIATION ADMINISTRATION WASHINGTON DC
|
| The Federal Aviation Administration (FAA) manages and operates the National Airspace System (NAS), a significant national resource. However, the demands on this system are continuously growing, and changing technologies provide the opportunity to dramatically improve system effectiveness and efficiency. To this end, the FAA's R,E&D Program is an investment in the future that will sustain the United States preeminence in aviation throughout the world. Without this investment, the United States ... |
|
| Geographic Knowledge Acquisition Promoted by Map Study and Rehearsal Flight Methods |
94 |
78 pages |
| Authors:
Scott T. Hutchinson; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| Three methods of pre-flight navigational preparation were evaluated, to address problems of geographic disorientation. Thirty pilots either 'actively' flew a rehearsal of an upcoming flight, 'passively' watched a replay of an active rehearsal, or participated in a map study session in order to 'learn' a low level navigation route and the surrounding region. Following training, subjects were then asked to navigate along the previously learned route in a high fidelity ... |
|
| Time Delay Measurements of Current Primary FAA Air/Ground Transmitters and Receivers |
JUN 93 |
26 pages |
| Authors:
John Petro; Philip Randazzo; FEDERAL AVIATION ADMINISTRATION TECH- NICAL CENTER ATLANTIC CITY NJ
|
| This report details the results of tests performed by ACW-300B, Spectrum Engineering Group, in determining the amount of time delay present in various air/ground communications equipment. This test was comprised of an Federal Aviation Administrative (FAA) Air Navigation Ground Radio Transmitter (AN-GRT-21) and an FAA Air Navigation Ground Radio Receiver (AN-GRR-23): two aircraft transceivers, a King KTR-905 very high frequency (VHF) transceiver, and a Collins VHF-251 Technical Standard Order (TSO) ... |
|
| Map Dimensionality and Frame of Reference for Terminal Area Navigation Displays: Where Do We Go from Here? |
93 |
83 pages |
| Authors:
Christopher R. Rate; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| The purpose of this study was to examine and compare a more radical design of instrument approach plates with a more traditional representation. Thirty subjects, 25 males and 5 females, were divided into two groups of fifteen for assignment to the map frame of reference condition (fixed or rotating maps). Each subject flew eight landing approaches, four with the two-dimensional display and four with the three-dimensional display. Subjects were given ... |
|
| National Airspace System: Air Traffic Control and Airspace Management Operational Concept NAS-SR-132 |
DEC 92 |
291 pages |
| Authors:
William Trent; Thomas Pickerell; Harold Nelson Jr; COMPUTER RESOURCE MANAGEMENT INC HERNDON VA
|
| The NAS has a responsibility to assist in the safe and efficient flow of traffic from departure aerodrome (or entrance to the system) to destination aerodrome (or exit from the system). It provides flight control services in the en route, terminal, and oceanic airspace. It also provides search and rescue services to locate lost aircraft. In order to exercise control of aircraft, the NAS must have information about the expected ... |
|
| Visual Detection of Pinpoint Targets |
12 JUN 91 |
15 pages |
| Authors:
G. Molokanov; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
|
|
| Navigation Guidance and Trajectory Optimization for Hypersonic Vehicles, |
DEC 1990 |
|
| Authors:
R. L. Schultz; M. J. Hoffman; A. M. Case; S. I. Sheikh; HONEYWELL SYSTEMS AND RESEARCH CENTER MINNEAPOLIS MN
|
| A computationally efficient, real-time trajectory optimization and guidance approach for hypersonic aircraft is described. The optimization algorithms compute, in flight, minimum fuel trajectories within constraints from the current aircraft position to its final destination. In flight trajectory computation can provide a high degree of vehicle autonomy which could greatly reduce aircraft ground support costs. The optimization approach is based on Euler-Lagrange theory and energy-state approximations. A three-dimensional, spherical earth, aircraft ... |
|
| A Glossary of Terms, Definitions, Acronyms, and Abbreviations Related to the National Airspace System (NAS) |
JUN 90 |
847 pages |
| Authors:
John M. Fabry; FEDERAL AVIATION ADMINISTRATION TECH- NICAL CENTER ATLANTIC CITY NJ
|
| This unofficial glossary was compiled to provide a common understanding of terms related to the National Airspace System (NAS). The terms contained in this glossary are primarily defined in an operational sense, and are applicable to users, operators and maintainers of the NAS. This document is not intended to be an arbiter of the 'official' definition; rather, it is intended to be a general listing of terms, definitions, acronyms and ... |
|
| Data Link Test and Analysis System/ATCRBS Transponder Test System |
MAY 90 |
159 pages |
| Authors:
John Van Dongen; FEDERAL AVIATION ADMINISTRATION TECH NICAL CENTER ATLANTIC CITY NJ
|
| This document is reference material for personnel using or making software changes to the Data Link Test and Analysis System (DATAS) for Air Traffic Control Radar Beacon System (ATCRBS) transponder testing and data collection. This is one of a series of documents to be published on DATAS. |
|
| Advances in Techniques and Technologies for Air Vehicle Navigation and Guidance |
DEC 89 |
|
| Authors:
ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)
|
| In the 1990's and beyond, air vehicles will be designed on the basis of functionally integrated systems and the operation of such aircraft will also be highly integrated. Past experience has clearly shown that interfacing classical subsystems can introduce critical compromises in overall systems performance, availability, safety and cost. Future systems will be designed and built by means of a new process where the physical characteristics of the resulting systems ... |
|
| Application of Optimal Tracking Methods to Aircraft Terrain Following |
DEC 89 |
29 pages |
| Authors:
M. E. Halpern; AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)
|
| Some approaches using least squares optimization for improving tracking control system performance are developed and applied to a simplified aircraft terrain following problem. A basic tracking control system is described. The design of an optimal moving-average precompensator which gives improved tracking performance over the basic system is then given. This filter design is modified to use future values of the reference input to give further improved performance. An approach involving ... |
|
| Collision Avoidance Operational Concept |
JUN 89 |
33 pages |
| Authors:
Meera Sharma; MITRE CORP MCLEAN VA
|
| This document is an operational concept for collision avoidance services which will be in place upon implementation of the Federal Aviation Administration (FAA) National Airspace System (NAS) Plan. this operational concept only discusses the ground-base portion of how the Air Traffic Control System (ATCS) provides flight safety by maintaining adequate aircraft separation. This concept discusses the aircraft separation assurance per the National Airspace System Requirement Specification (NASSRS). The objective of ... |
|
| Technical Evaluation Report on the Guidance and Control Panel Symposium (48th) on Advances in Techniques and Technologies for Air Vehicle Navigation and Guidance Held in Lisbon, Portugal on 9-12th May 1989 |
MAY 89 |
13 pages |
| Authors:
Walter M. Hollister; ADVISORY GROUP FOR AERONAUTICAL RESEARCH AND DEVELOPMENT PARIS (FRANCE)
|
| Papers were presented covering the following headings: Terrain reference navigation methods; Positioning by image processing or GPS; Mission and sensor management; New techniques and algorithms; Sensor technology; Systems applications. Keywords: Global positioning system; Millimeter wave radar; Infrared radar; Multisensors; Navigation reference; Guided missiles guidance; Jet fighters; Air navigation; Sensor management; Sensor fusion; Expert systems; Inertial sensors; MMW/IR seeker; Position finding. (edc) |
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