JPS6472090A - Radar equipment - Google Patents

Abstract

PURPOSE:To obtain the attenuation band characteristic of a frequency response at the time of performing no stagger even in a stagger operation by reading out a filter constant with the same frequency characteristic as in case where a repeating cycle is constant from a constant storage apparatus corresponding to the repeating cycle of a transmitter, and multiplying it by reception output, in stagger transmission in which the repeating cycle is unstable. CONSTITUTION:The filter constant derived in advance so that frequency response characteristic in the case where the repeating cycle of a transmission pulse signal is constant can be set almost equal to the one in the case where it is not constant is stored in a constant file 30. Transmission repeating cycle information from a transmission controller 14 is supplied to a controller 31, and the file 30 is controlled corresponding to the information, and the optimum filter constants omegai and omegaq are supplied to a computing element 29. Meanwhile, a reflection signal phase-detected at a receiver 20 from a target goes to the output signals Xi and Xq via A/D converters 26 and 27, and are supplied to the computer element 29. By eliminating a clutter signal by multiplying the constants omegai and omegaq by the reception output Xi and Xq at the computing element 29, it is possible to obtain the attenuation band characteristic of the frequency response at the time of performing no stagger even in the stagger operation.