Exploring in detail the physics and technology necessary to analyze and understand meter-wave synthetic aperture
radar and its applications, Hellsten focuses on targets screened by forests or underground, for which the experimental data and theoretical development are more advanced than for building penetration and ground topography.
The antenna reflector, furnished by Astro Aerospace, is part of the NISAR L-band synthetic aperture
radar managed by NASA's Jet Propulsion Laboratory.
Here, a brief analysis of near-field synthetic aperture
imaging model based on "T" antenna array is demonstrated.
When synthetic aperture
techniques are applied at sufficiently low acoustic frequencies, where sound absorption in the ocean medium is minimized, a modest-sized side-scan sonar can generate imagery with a constant azimuth resolution comparable to that of higher frequency sonar systems, but with a longer range potential, as shown in Figure 1.
Desert Storm underscored the reality that the synthetic aperture
radar has become indispensable to military operations because of the clarity of the image that it provides, its day and night application and resistance to interference from bad weather.
A similar technique, called synthetic aperture
radar, has long been used to construct 3-D landscapes from radio waves emitted by an airplane or satellite and reflected by the ground back to the craft.
How about synthetic aperture
radar or inverse synthetic aperture
radar, technologies that have opened up exciting possibilities for overcoming the ill effects of atmospheric disturbances and poor visibility?
Current and future missions depend heavily on the aircraft's ability to find and track targets, so this modification to the synthetic aperture
radar is critical.
The MQ-9 will provide a hunter-killer capability and will feature the ability to use synthetic aperture
radar to hunt for targets," Severyn said.
The SSU enhanced the ability of the S-3Bs' APS-137 synthetic aperture
radar to accurately track surface targets.
Their joint initiative involves the matching of multiple radar images of the same site, acquired using instruments such as the synthetic aperture
radar aboard ESA's ERS satellite, so that tiny movements are highlighted.
EADS Astrium has recently completed trials of its Airborne Synthetic Aperture
Radar (SAR), called the MicroSAR Airborne Demonstrator.