| 3rd IAGA/ICMA Workshop on Vertical Coupling in the Atmosphere/Ionosphere System/ Abstract |
10 JAN 2007 |
|
| Authors:
Dora Pancheva; BATH UNIV (UNITED KINGDOM)
|
 | The Final Proceedings for 3rd IAGA/ICMA Workshop on Vertical Coupling in the Atmosphere/Ionosphere 18 September 2006 - 22 September 2006. The 3rd IAGA/ICMA Workshop will focus primarily on those forcing mechanisms that originate in the lower atmosphere on their transmission into the atmosphere-ionosphere system and the ways in which these are influenced by changing solar geomagnetic and anthropogenic drivers. The workshop will address recent studies on atmospheric coupling with special ... |
|
| An Investigation into the Relationship between Ionospheric Scintillation and Loss of Lock in GNSS Receivers |
01 JUN 2006 |
52 pages |
| Authors:
Robert W. Meggs; Cathryn N. Mitchell; Andrew M. Smith; BATH UNIV (UNITED KINGDOM)
|
 | Irregularities in the ionospheric electron density can cause a phenomenon known as scintillation, in which the phase and amplitude of transiting radio signals fluctuate rapidly. Scintillation can have an adverse effect on Global Navigation Satellite Systems (GNSS) signals as they pass from a satellite to a receiver, and extreme cases can cause a GNSS receiver to lose lock on the signal. This limits the availability of path-length measurements, and compromises ... |
|
| Polar Ionospheric Imaging at Storm Time |
01 JUN 2006 |
42 pages |
| Authors:
Ping Yin; Cathryn Mitchell; Gary Bust; BATH UNIV (UNITED KINGDOM)
|
| During periods of major geomagnetic storms the polar ionosphere becomes very variable. Ground-based measurements, such as NIMS, GPS or ionosonde data are too sparse to do tomographic imaging, however, combination of these data sources as well as other available measurements, such as satellitebased data, may have the possibility to monitor the structure of the disturbed polar ionosphere. In this paper, LEO-based GPS data onboard CHAMP as well as ground-based GPS ... |
|
| Real-Time Imaging of the Ionosphere over the United Kingdom - Preliminary Results |
JUN 2006 |
31 pages |
| Authors:
Robert W. Meggs; Cathryn N. Mitchell; Robert J. Watson; Richard M. Dear; BATH UNIV (UNITED KINGDOM)
|
| A novel ionospheric imaging technique has recently been developed at the University of Bath. Known as Multi-Instrument Data Analysis System (MIDAS), this technique is a tomographic algorithm that inverts dual-frequency carrier-phase measurements of Total Electron Content (TEC) to produce maps of ionospheric electron concentration in space and time. Using freely available GPS observation data from a large number of fixed dual-frequency GPS receivers, the MIDAS method has been very successful ... |
|
| Modelling the Main Ionospheric Trough Across the Northern Hemisphere |
19 MAY 2004 |
29 pages |
| Authors:
Cathryn Mitchell; BATH UNIV (UNITED KINGDOM)
|
| This report results from a contract tasking University of Bath as follows: The contractor will investigate disturbances in the Northern Hemisphere ionosphere using a Multi-instrument data analysis (MIDAS) imaging algorithm. This technique will be applied to existing data that has been previously collected by the contractor and other public sources. The final report will contain an analysis of these measurements. |
|
| Insect Flight and MAVs |
05 NOV 2002 |
|
| Authors:
BATH UNIV (UNITED KINGDOM)
|
| Insects are highly successful autonomous MAVs. They are specialized for flight at this size range, where conventional wings in steady motion perform badly. Flapping wings can generate 2-3X more lift -- the extra lift capacity is highly desirable for MAVs. Only a flapping design can exploit the high-lift/ high-drag aerodynamic mechanisms found in insect flight. After 350 million years of evolution, they have probably found good solutions for: Kinematics - ... |
|
| Multi-Instrument Data Analysis System (MIDAS) Imaging of the Ionosphere |
FEB 2002 |
31 pages |
| Authors:
C. N. Mitchell; P. S. Cannon; BATH UNIV (UNITED KINGDOM)
|
| A new technique has been developed to reveal the temporal and spatial distribution of ionization in the ionosphere and plasmasphere. The technique uses freely-available GPS satellite data over the continents of the Northern Hemisphere to produce fully four-dimensional movies of the ionization distribution. In this report a quantitative, large-scale study has been undertaken to evaluate the technique over the USA. The research focuses on two periods. The first is a ... |
|
| International Symposium on Neurotoxins in Neurobiology (4th) Held in Bath, United Kingdom on 19th-23rd September 1993. Speakers' Abstracts 1-25 |
93 |
|
| Authors:
BATH UNIV (UNITED KINGDOM)
|
|
| Acoustic-Mode Vibrational Anharmonicity Related to the Anomalous Thermal Expansion of Invar Iron Alloys |
92 |
|
| Authors:
Ll. Manosa; G. A. Saunders; H. Rahdi; U. Kawald; J. Pelzl; BATH UNIV (UNITED KINGDOM)
|
| Temperature dependences of hydrostatic-pressure derivatives of ultrasonic wave velocities in Fe72Pt28 and Fe72Pt25Ni3 Invars were measured to study the behavior of the expansion in the temperature range 260 K and Curie temperature. Temperature effects on phase properties and ultrasonic wave velocities in various directions were also studied. |
|
Reports by Corporate Author
