Processing method and device for satellite-based AIS signal

The invention discloses a satellite-based AIS signal-oriented processing method and device, and the method employs the adjustment of the capturing sensitivity, can control the capturing precision under the condition that the number of environment signals is different, and improves the capturing efficiency in a targeted manner. And a strategy of'single first and double second 'is adopted, the signal is demodulated according to a single time slot signal, and if the demodulation fails and the data has normal signal characteristics, the signal is demodulated according to a double time slot signal, so that the successfully captured message is demodulated to the maximum extent, and the processing performance of the AIS signal is improved. 本申请公开了一种面向星基AIS信号的处理方法及装置，该方法采用调节捕获灵敏度，可以在环境信号数量不同的情况下控制捕获精度，有针对性地提高捕获效能；以及采取"先单后双"的策略，先把信号按照单时隙信号解调，如果解调失败且数据具备正常信号特征则按照双时隙信号解调，保证最大限度地解调捕获成功的报文，提高了AIS信号的处理性能。