Radar Signal Analyzing System.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent relates to a storage type phase-coherent pulse-doppler radar system wherein return signals containing doppler information from a plurality of ranges are stored and then analyzed to determine the velocity and acceleration of the target. Each of the signals is heterodyned with a variable frequency and the difference frequency is presented to a narrow pass filter. The variable frequency is varied stepwise as well as continuously over the expected range of received doppler frequencies and the filter produces an output signal only when the difference frequency falls within a narrow range. This output signal is stored in a memory device and its storage position indicates the velocity and acceleration of the target.
- Active and Passive Radar Detection and Equipment