162. Dynamic-range Extension Processing Using CR System
نویسندگان
چکیده
منابع مشابه
Extending the Radar Dynamic Range using Adaptive Pulse Compression
The matched filter in the radar receiver is only adapted to the transmitted signal version and its output will be wasted due to non-matching with the received signal from the environment. The sidelobes amplitude of the matched filter output in pulse compression radars are dependent on the transmitted coded waveforms that extended as much as the length of the code on both sides of the target loc...
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Compression is a reduction of the dynamic range of a signal, meaning that the ratio of the loudest to the softest levels of a signal is reduced. This is accomplished using an amplifier with variable gain that can be controlled by the amplitude of the input signal: when the input exceeds a preset threshold level, the gain is reduced. The figure below is a device input/output graph that shows the...
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Compression is the automatic reduction of gain as the signal level increases beyond a preset level called the threshold. It is an automatic version of “gain riding”, where one might manually lower a fader as the signal grows larger to maintain a more constant output level. For signals above the threshold, the increase in output amplitude for a given increase in input amplitude is known as the c...
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Abstract: Several algorithms have been developed for the data processing of spotlight synthetic aperture radar (SAR). In particular, the range migration algorithm (RMA) does not assume that illuminating wavefronts are planar. Also, a high resolution image can be obtained by the RMA. This paper introduces an extension of the original RMA to enable a more efficient airborne SAR data processing. W...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1993
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003501207