ABSTRACT
The time–frequency analysis of a signal is an important method in signal processing and analysis, and plays an important role in the analysis of low-probability signals. This chapter analyzes several low-probability intercept signals are introduced and the principle of WVD transform. With the development of electronic technology and information technology, the demand for information technology in various fields is also expanding, and the military field is becoming more and more informational. Time–frequency analysis method is a good method to analyze radar signals with a low probability of intercept, which can be divided into linear and non-linear transformation. Linear Frequency Modulation signal is a kind of relatively early pulse compression signal, which is a kind of signal waveform which is often adopted. As for the distance resolution, PSK is also the pulse pressure signal, but also through the time domain nonlinear phase modulation it achieves the purpose of expanding the equivalent bandwidth.
