Abstract: The Frequency Modulation Continuous Wave (FMCW) radar has the characteristics of low probability of interception, good hidden property and ability to counter anti-radiation missiles. This paper proposes a new method for high speed ground moving target detection using triangular FMCW modulation. According to the characteristic of the reverse range shift induced by the upslope and downslope of triangular FMCW modulation, the upslope and downslope are imaged, respectively. After compensation of continuous motion of the platform and time difference between upslope and downslope signals for imaging, the moving target can be detected through displaced phase center antenna(DPCA) technology. When the moving target is detected, we extract the moving target image, and use the correlation processing to get the range shift, which can help to estimate the target range velocity, and to find the real position of the target. Computer simulation verifies the validity of the method.

Key words: GMTD, triangular FMCW modulation, correlation processing