Pseudonoise guidance system with spillover rejection

Details Pseudonoise guidance system with spillover rejection Pseudonoise guidance system with spillover rejection

1970-10-19

1977-03-15

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325349, 325473, G01S 902

Patent

active

040127370

ABSTRACT:
A device for rejecting spillover from a pseudonoise, continuous wave radar transmitting antenna. Spillover is the energy transmitted directly from transmitter to receiver. It is undesirable and must be suppressed in order to be able to sense the desired reflected wave from a target. Suppression is accomplished by decoding the spillover at the receiver antenna range from the transmitting antenna. The desired signal is not decoded because the desired signal has a code corresponding to target range. The target signal, thus, remains broadband whereas the spillover is reduced simply to a single frequency larger than zero or equal to zero (direct current). A notch filter or a high pass filter or direct current blocking capacitor may then be used to pass the target signal and block the spillover.

REFERENCES:
patent: 3205443 (1965-09-01), Ludwig

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