Radar guidance system correcting hardware induced...

Details Radar guidance system correcting hardware induced... Radar guidance system correcting hardware induced...

G - Physics

01

S

G01S 7/02 (2006.01) G01S 7/40 (2006.01) G01S 13/44 (2006.01)

Patent

CA 2057254

A phase dependent radar guidance system, the receiver (18) of which separates returns into a channel (22) where returns are summed (S) and a further channel (24) where the returns are differenced (jD). The S and jD signals are combined (26) and formed into two further channels as S+jD and s-jD, both of which are passed through AGC controlled amplifiers (28, 30) into a phase angle detector (32) which provides the target (14) angle B to boresight (20). A test signal is applied to the receiver (18) with jD = O, the output value of the phase angle detector (32) for various values of AGC attenuation are stored by a digital processor (34), and the processor (34) modifies measured target phase value with the stored values to correct for AGC amplifier-induced errors.

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