Processing device of radar signal

Abstract

Abstract PURPOSE:To prevent an increase in a false alarm by providing a threshold coefficient setting circuit and a switching constant false alarm rate circuit and by adding a distribution computing circuit, an average value computing circuit and an automatic function setting circuit of a constant false alarm rate. CONSTITUTION:Outputs of a pulse Doppler filter 1, an automatic function setting circuit 4 of a constant false alarm rate and a threshold coefficient setting circuit 5 are inputted to a switching constant false alarm rate circuit 8. In the switching constant false alarm rate circuit 8, either of a first constant false alarm rate circuit 6 or a second constant false alarm rate circuit 7 is selected on the basis of information from the circuit 4, and the output of the pulse Doppler filter 1 and a threshold level signal obtained by multiplying a threshold value comput ed on the basis of shift average values of a distance and a direction by a thresh old coefficient are compared with each other. A signal exceeding the threshold level signal is regarded as a target and an unnecessary signal and the number of separated targets are detected.

Inventors

• 👤 Naomi Aoki
• 👤 青木　尚実

Bibliographic Details