Digital Processing Of Synthetic Aperture Radar Data Download
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The first area, AESA, is the newest and most promising of the four areas. AESAs aretwo-dimensional arrays of transponder modules with an associated beamforming system. Eachtransponder module contains transmitter, receiver and digital beamforming/processingelectronics. The transponder modules transmit and receive radar signals via a circulartransmitter, receiver and digital beamforming electronics. The digitally-processed radar returns areexchanged via a serial link for data relay to the next transponder.
Synthetic aperture radar (SAR) can be used for imaging, searching and detecting objects innear-, mid- and far-range detection. Radar resolutions depend on the amount of time it takes for thesensors to acquire targets. The time available for a single radar pulse is called a dwelltime, which is a function of the pulse width, transmit chirp bandwidth, receive bandwidth anddistance. Lockheed Martin has directed its activities in the area of radarimaging, ranging and sensing through the Lockheed Martin Corporation. Theirresearch and development operations employ scientists and engineers in four majorareas:
Employing advances in computer architecture, radar sensors andguidance systems, the partnership between Lockheed Martin and UPRM will providethe means to improve the accuracy, reliability and efficiency of U.S. military andcivilian counter-terrorism operations. This partnership will also develop anddemonstrate sensor technologies that can be used for border security, search andrescue, emergency response and other government and commercial applications.
Synthetic aperture radar (SAR) is a well known and widely used imaging technique. SAR is a coherent technique where the returned signal is a sum of all scattering events at the scatterers on the ground. So, for a given transmitter and receiver a SAR image is a projection of the ground on the observation geometry. The synthetic aperture principle and linear scaling of the SAR signal can be described by the following equation: 827ec27edc