According to the secondorder coherence of thermal light applied in optics, such as associated imaging, clock synchronization, and correlated ranging, etc. under condition of extending the knowledge mentioned above into the microwave frequency band, thermal microwave signal can be utilized for carrying out the second-order coherence navigation ranging and angle measurement. The process of the thermal microwave signals based ranging and angle measurement by using secondorder coherence reads as follows. First of all, a power splitter is utilized for splitting the prepared thermal microwave signal into two equal power paths, and two thermal microwave signals are transmitted through two antennas. At the receiving end, the realtime power of two signals is measured by signal receiver, then the correlation operations on the measured power waveforms are made. Through the extraction of correlation peaks, the distance difference between the two channels of signal propagation is calculated, then the target azimuth information is derived from the principle of interferometric angle measurement. The result shows that due to the truly random nature of the thermal microwave signals, the problem of integer ambiguity caused by periodicity of signals in traditional radio navigation positioning is solved. And the antinoise performance, and the antimultipath capability ate better, and the positioning accuracy is improved.