基于实时解调的AIS信号侦察

针对日益增强的船舶自动识别系统（AIS）信号侦察需求，以实 时解调为主要侦察手段，结合采样数据存储，提出了一种通用的AIS信号侦察的FPGA设计方 案。通过乒乓操作、高精度计时器等设计，解决了AIS侦察的实时解调、标准时隙校准、高 精度时标等问题。试验结果验证了该设计的实用性。

AIS signal reconnaissance based on real-time demodulation

According to the growing ship automatic identification system(AIS) signal reconn aissance demand, by using real-time demodulation as the main reconnaissance meas ure, and in combination with the sampling data storage,a general FPGA design of AIS signal reconnaissance scheme is proposed.Through ping-pong operation and hig h-precision timer design,such problems as the real-time demodulation of the AIS reconnaissance, calibration for standard slot and high-precision time scale are solved. The feasibility of the scheme is verified by test.