| The Design, Development and Test of Balloonborne and Groundbased Lidar Systems. Volume 2. Flight Test of Atmospheric Balloon Lidar Experiment, ABLE II |
01 JUN 91 |
90 pages |
| Authors:
O. Shepherd; R. D. Bucknam; A. G. Hurd; W. H. Sheehan; VISIDYNE INC BURLINGTON MA
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 | This is Volume 3 of a three volume final report on the design, development and test of balloonborne and groundbased lidar systems, Volume 1 describes the design and fabrication of a balloonborne CO sub 2 coherent payload to measure the 10.6 micrometers backscatter from atmospheric aerosols as a function of altitude. Volume 2 describes the August 1987 flight test of Atmospheric Balloonborne Lidar Experiment, ABLE 2. In this volume we ... |
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| The Design, Development, and Test of Balloonborne and Groundbased Lidar Systems. Volume 1. Balloonborne Coherent CO sub 2 Lidar System |
01 JUN 91 |
118 pages |
| Authors:
O. Shepherd; G. Aurilio; R. D. Bucknam; A. G. Hurd; S. A. Rappaport; VISIDYNE INC BURLINGTON MA
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| This is Volume 1 of a three volume final report on the design, development and test of balloonborne and groundbased lidar systems. Volume 2 describes the flight test of Atmospheric Balloonborne Lidar Experiment, ABLE 2, which successfully made atmospheric density backscatter measurements during a flight over White Sands Missile Range. Volume 3 describes groundbased lidar development and measurements, including the design of a telescope dome lidar installation, the design of ... |
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| The Design, Development, and Test of Balloonborne and Groundbased Lidar Systems. Volume 3. Groundbased Lidar Systems |
01 JUN 91 |
56 pages |
| Authors:
O. Shepherd; G. Aurilio; R. D. Bucknam; A. G. Hurd; N. F. Robertie; VISIDYNE INC BURLINGTON MA
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| This is Volume 3 of a three volume final report on the design, development and test of balloonborne and groundbased lidar systems. Volume 1 describes the design and fabrication of a balloonborne CO sub 2 coherent payload to measure the 10.6 micrometers backscatter from atmospheric aerosols as a function of altitude. Volume 2 describes the August 1987 flight test of Atmospheric Balloonborne Lidar Experiment, ABLE 2. In this volume we ... |
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| Aircraft Lidar Sensitivity Study for Measuring Water Vapor |
01 APR 91 |
32 pages |
| Authors:
R. J. Rieder; O. Shepherd; VISIDYNE INC BURLINGTON MA
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| The amount of water in the optical path between an airborne measurement platform and a target is responsible for the difference between the actual and the measurement target spectral radiance. In situ measurements of water vapor can be limited by outgassing from the sensor and/or its environment. A study was performed to investigate the use of lidar remote sensing techniques for the remote measurement of water vapor from a measurement ... |
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| Studies of Techniques for Measuring Spaceborne Gaseous Contaminants and Particulates in the Near Field |
18 MAY 89 |
66 pages |
| Authors:
G. E. Galica; S. A. Rappaport; W. P. Reidy; O. Shepherd; VISIDYNE INC BURLINGTON MA
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| This report outlines techniques for monitoring the water vapor and particulate contamination in the vicinity of a spacecraft. The water vapor concentration is measured by first dissociating the water vapor with VUV radiation from a krypton flashlamp and then monitoring the intensity of the chemiluminescence from the dissociation products. The particle properties are measured by illuminating particles in field of view of an imaging detector with visible radiation from a ... |
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| Project ABLE: (Atmospheric Balloonborne Lidar Experiment) |
25 MAR 1985 |
97 pages |
| Authors:
O. Shepherd; G. Aurilio; R. D. Bucknam; A. G. Hurd; W. H. Sheehan; VISIDYNE INC BURLINGTON MA
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| Project ABLE (Atmospheric Balloon Lidar Experiment) is part of the A. F. Geophysics Laboratory's continuing interest in developing techniques for making remote measurements of atmospheric quantities such as density, pressure, temperatures, and wind motions. The system consists of a balloonborne lidar payload designed to measure neutral molecular density as a function of altitude from ground level to 70 km. The lidar provides backscatter data at the doubled and tripled frequencies ... |
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| BAMM II Flight, 30 April 1982, Engineering Evaluation Report |
01 JUL 1982 |
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| Authors:
R. W. Brooke; O. Shepherd; W. P. Reidy; VISIDYNE INC BURLINGTON MA
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 | The objectives of the BAMM II flight of 30 Apr 1982 were as follows: Infrared earth/atmosphere background at sunrise and low angle solar specular reflections; Infrared earth background - snow fields; and Infrared earth background - mountains. Data was obtained from three types of scenes. However, due to a command system malfunction, the number of scene measurements was reduced. During the flight, the command link was subjected to frequent intermittent ... |
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| Balloonborne Lidar Experiment. |
24 DEC 1980 |
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| Authors:
O. Shepherd; G. Aurilio; R. D. Bucknam; R. W. Brooke; A. G. Hurd; VISIDYNE INC BURLINGTON MASS
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| The object of this contract was to design a balloonborne lidar experiment capable of performing nightime atmospheric density measurements in the 10 to 40 km altitude domain with a resolution of 100 meters. The payload includes a frequency-tripled Nd:YAG laser with outputs at 353 and 1064 nm, a telescoped receiver with PMT detectors, a command-controlled optical pointing system, and support systems, including thermal control, telemetry, command, and power. Density measurements ... |
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| Rocketborne Laser Backscatter Experiment. |
15 MAR 1979 |
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| Authors:
O. Shepherd; A. G. Hurd; W. H. Sheehan; R. D. Bucknam; VISIDYNE INC BURLINGTON MASS
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| A previously flown rocket payload designed to measure atmospheric density in the thermosphere through Rayleigh, backscatter of a dye laser signal, was modified and refurbished. In its earlier field test the payload failed to provide any data, apparently because of a timing problem. Relaunched the laser failed to operate because of a minor component failure. However, measured background intensities were orders of magnitude higher than anticipated. The source of the ... |
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| Evaluation and Development of Advanced High Altitude Experiments and Systems. |
01 DEC 1978 |
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| Authors:
J. W. Carpenter; C. Humphrey; A. Hurd; W. P. Reidy; O. Shepherd; VISIDYNE INC BURLINGTON MASS
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| This report covers development of advanced HAES experiments and related optical codes, development of rocketborne UV and visible spectrometers and particle analyzers, and evaluation and testing of Advanced Energy Deposition Systems (AEDS). (Author) |
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| Tailored Modulation Transfer Function and the Application to Dual Beam Interferometry, |
27 MAR 1978 |
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| Authors:
T. F. Zehnpfennig; S. Rappaport; W. P. Reidy; O. Shepherd; VISIDYNE INC BURLINGTON MASS
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| A technique for background suppression for use in Dual Beam Interferometers and other imaging systems is described. Background suppression is achieved by using pairs of optical systems whose modulation transfer functions match at low spatial frequencies but not at the higher frequencies which characterize a target. Various pairs of systems are discussed, and signal-to-RMS-clutter-leakages are calculated. (Author) |
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| IR Background Suppression Studies, |
15 MAY 1977 |
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| Authors:
O. Shepherd; W. P. Reidy; T. F. Zehnpfennig; G. A. Vanasse; A. T. Stair Jr; VISIDYNE INC BURLINGTON MASS
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| A brief description of the background suppression scheme is described, and results obtained using the defocussing technique are presented. It has been demonstrated that a background suppression ratio of two orders of magnitudes can be obtained. |
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| The Design and Flight Test of a 30 kw Rocket-Borne Electron Accelerator Module (EXCEDE II Test) HAES Report Number 22. |
15 JUL 1975 |
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| Authors:
O. Shepherd; J. W. Carpenter; W. P. Reidy; W. A. Sheehan; T. F. Zehnpfennig; VISIDYNE INC BURLINGTON MASS
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| A 30 kw, 3 kV rocket-borne electron accelerator was designed, fabricated, tested and launched from the Poker Flat Research Range as part of the EXCEDE Program. Additional rocket-borne and ground instrumentation provided diagnostic information to evaluate accelerator performance. The high voltage power supply and electron guns were designed specifically for high power deposition. This engineering test demonstrated the accelerator met its design criterion. |
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| ROCKET-BORNE INSTRUMENTATION TO MEASURE THE RATE OF IONIZATION AND RELATED PHENOMENA DURING AN AURORA. |
15 JUN 1964 |
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| Authors:
W. P. Reidy; G. Davidson; R. GIACCONI; O. Shepherd; R. Smith; AMERICAN SCIENCE AND ENGINEERING INC CAMBRIDGE MASS
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| The scientific objectives of the experiments and the individual instruments flown on the Astrobee 200 sounding rocket AC 15.610 are discussed in detail. The rocket was instrumented for auroral studies and was launched from Fort Churchill, Manitoba, Canada on 8 December 1963. The instrumentation included a new detector to measure the rate of ion production during periods of abnormally large ionization and other detectors to measure such related phenomenon as ... |
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