An Experimental 24 GHz Radar using Phase Modulation Spread Spectrum Techniques

In this contribution, an experimental bistatic radar sensor at 24 GHz is described, based on phase coded spread spectrum modulation. The sensor uses a code clock rate of200MHz and a code length of 1023, resulting in a range resolution (for two targets) of 1.5 m andan unambiguous range ofabout 750 m. The digital signal modulates a 1.6 GHz signal which then is upconverted to 24 GHz. The received signal is downconverted to an IF frequency of 1.6 GHz and then demodulated with the reference frequency of 1.6 GHz, modulated with a delayed phase code. The setup of the digital part as well as the microwave part of the sensor will be described together with first test results.