雷达跟踪系统的随机干扰自适应
Adaptation of Radar Tracking Systems to Random Disturbances
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摘要: 热噪声和阵风是雷达角跟踪系统中的两个主要随机干扰源.本文首先将问题公式化为一 个以热噪声误差和阵风误差的平方和为指标的最优伺服过零频率的问题,然后将该过零频率 表示为可测量的接收机自动增益控制电压和平均风速的函数,从而综合出拟增益排表自适应 控制器.并通过数学分析和现场实验证实了这种拟增益排表自适应伺服系统的优越性.Abstract: Thermal noise and wind gust are the most significant random disturbances to radar angle tracking. The optimal servo crossover frequency is fornulated by a functional of the RMS sum of thermal noise error and wind gust error. Then it is derived to be a function of AGC (Automatic Gain Control in receiver) voltage and average wind velocity sampled by a computer, Thus, a quasi-gain scheduling adaptive servo system is proposed. The effectiveness of the proposed system is illustrated by mathematical analysis and field experiment results.
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Key words:
- Servo bandwidth /
- adaptive control /
- radar tracking /
- disturbance rejection
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