Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Receiver
Patent
1996-05-28
1998-04-07
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Receiver
342 25, 342120, 342121, 342135, 342191, 342196, G01S 1308
Patent
active
057369577
ABSTRACT:
A delay compensated Doppler radar altimeter which eliminates the relative delay curvature associated with the energy reflected by a scatterer located in the along-track direction of an aerial platform for which a most accurate estimation of scatterer elevation is desired. By Doppler shifting each return, the range indicated for each scatterer over its illumination history is equal to the minimum range x.sub.h experienced when the relative velocity between the aerial radar and the ground is effectively zero. Compensating each signal so that its entire along-track history can be used for elevation estimation leads to an advantage of more than 10 dB in gain improvement over existing systems, and less degradation from surface topography.
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Krivak Carla Magda
Pawlikowski Eugene J.
Sotomayor John B.
The Johns Hopkins University
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