Communications: directive radio wave systems and devices (e.g. – Synthetic aperture radar
Patent
1990-09-04
1991-10-01
Hellner, Mark
Communications: directive radio wave systems and devices (e.g.,
Synthetic aperture radar
342175, G01S 1390
Patent
active
050537725
ABSTRACT:
A method of providing motion compensation (i.e. phase, doppler frequency, and range closure correction) for wide band synthetic aperture radar (SAR) or classification/identification radar modes is disclosed. An improved radar system employing the method is also disclosed. The method involves dividing the motion compensation into both a focusing function and a range closure function. Either or both these functions is achieved by modifying the transmitted signal. For stretch waveform processing systems, the method involves generating both the transmitted and reference signals. The radar system includes a waveform generator capable of implementing the various motion compensation techinques when the transmitted waveform is a linear FM waveform.
REFERENCES:
patent: 4771287 (1988-09-01), Mims
patent: 4924229 (1990-05-01), Eichel et al.
patent: 4950880 (1990-08-01), Hayner
Grettenberg Thomas L.
Lamper David
Electronics & Space Corporation
Hellner Mark
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