The authors apply two finite-impulse response (FIR) filter design techniques that find the optimum finite-wordlength (FWL) coefficients to meet an arbitrary frequency-domain criterion to the design of moving-target indicator filters. These FWL FIR filters are truly optimum in the weighted-least-square sense. Examples show that discrete optimization increases the signal-to-clutter improvement ratio (I/sub SC/) by up to 20 dB, compared to simple rounding. The designer has the choice of increasing performance for the specified wordlength or of minimizing wordlength (minimum cost, maximum speed) for the specified performance. In addition, these techniques provide the flexibility to handle stationary and moving clutter simultaneously.
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机译：作者将两种有限冲激响应（FIR）滤波器设计技术应用于运动目标指标滤波器的设计，这些技术可以找到满足任意频域标准的最佳有限字长（FWL）系数。这些FWL FIR滤波器在加权最小二乘意义上确实是最佳的。实例表明，与简单的舍入相比，离散优化将信噪比改善率（I / sub SC /）提高了20 dB。设计人员可以选择提高指定字长的性能，或者最小化指定字性能的字长（最小成本，最大速度）。另外，这些技术提供了灵活性，可以同时处理静止和运动的杂波。
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