TARGET ANGLE DETECTION DEVICE, TARGET ANGLE DETECTION METHOD AND GUIDANCE DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain higher angle measuring accuracy.SOLUTION: A target angle detection device includes: a radar receiving section; a target detection section; a first data extraction section; an acceleration correction Fourier transformation section; a second data extraction section; and a monopulse angle estimation section. The radar receiving section demodulates by receiving a radar wave reflected by a target over a plurality of coherent integration periods. The target detection section detects the target from a demodulation result of each coherent integration period, and extracts a speed change for the detected target. The first data extraction section extracts sum signals and difference signals from the demodulation result of the plurality of coherent integration periods for the detected target. The acceleration correction Fourier transformation section performs Fourier transformation processing in order to correct the plurality of sum signals and the difference signals on the basis of the speed change. The second data extraction section extracts a sum signal representative value and a difference signal representative value for one target from a Fourier transformation result. The monopulse angle estimation section performs angle estimation by a monopulse from the sum signal representative value and the difference signal representative value.