| 摘要 |
<p>PURPOSE:To improve the visibility and direction accuracy of a moving target by interpolating a blip split and removal of a target signal for a signal after constant wrong alarm rate processing and filter selection of every Doppler frequency. CONSTITUTION:A reflected radio wave from the target is received by an antenna 3 and passed through a circulator 2, a receiver 2, etc., and a canceler 6 remove a fixed signal component. Then, only signal components in a pass-band frequency range are separated and extracted by Doppler filters 7A-7N and supplied to a filter selector 9 after moving clutter components are suppressed by constant wrong alarm rate processors 8A-8N. The selector 9 selects the signal with the largest amplitude among output signals of the processors 8A-8N in processing units in each distance direction and inputs the selected signal to an amplitude interpolator 10 as an output signal 101. Then, the signal 101 is compared at the same distance in each of three directions and only when the center direction signal level is smaller than the preceding and following direction signal levels, the center signal level is substituted with the mean signal level of the preceding and following signal levels to interpolate the blip split, etc., of the target signal.</p> |
