In this paper, the basic geometrical relationship and signal energy relationship of non-cooperative bistatic radar are introduced, and the method using the cross-correlation to obtain the time difference of direct signals and target scattering echoes in noisy environment is discussed. Some experiments have been done to simulate the process of cross-correlation detection and time difference estimation. What's more, on the basis of them, some parameters affecting the performance of the algorithm, such as the signal-noise ratio, pulse width and pulse number of cross-correlation, are analyzed by Monte Carlo simulation.
In order to testify the algorithms for the detection of wake targets in strong sea clutter background, a system which is used to acquire and analyse sea clutter data is developed. The system uses USB2.0 as the interface with microcomputer and works with FPGA as its kernel chip. Experimental results show that it can satisfy the data acquisition tasks of many kinds of radar and has a wide range of application.
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