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被动雷达导引头数字信道化技术

Keywords: 被动雷达导引头, 灵敏度, 数字信道化, 数字鉴相??

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Abstract:

为了提高被动雷达导引头系统灵敏度并且给信号分选处理机提供相位差信息,提出了一种采用相位干涉仪测向与数字信道化接收相结合的方法,在宽频带内实现多信号同时接收、数字鉴相和数字测频.针对被动雷达导引头对目标实时截获跟踪的要求,采用了一种高速高效信道化结构,在采用??D??个子带的条件下,可将被动导引头系统灵敏度提高??10log??D?? dB.??通过构建实际的数字信道化接收系统并进行测试,测频误差不超过1 MHz,动态范围可达到30 dB.

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