| 摘要 |
<p>PURPOSE:To provide a radar which receives modulated signals including reflected echo from a target and clutters, restrains the clutters so as to demodulate target signals, and thereby detects the target. CONSTITUTION:Pulse signals are 3 modulated at every pulse on a code series generated by a code generator 2 and are radiated into the space from an antenna 8 after conversion 4 to RF. The signals received V undergo phase detection 12 after conversion 4 to RF and amplification 11 and are 13 converted to digital signals. Target signals involved in the digital signals are demodulated, and clutters, which are unnecessary signal components, are 14 restrained so as to 15 detect a target without being obstructed by the clutters. The load coefficient of a non-matching digital filter used to demodulate the target signals and to restrain the clutters is found by a non-matching digital filter load coefficient deciding device 51 using the code series generated by the code generator 2 and the outputs of a clutter Doppler frequency/reception time estimater 16.</p> |
