Integrated Waveform Design Based on Spread Spectrum OFDM Radar Communication

Along with radio technological development, radar-communication integration has become a new research hotspot in information field, and the design of integrated waveform is one of the key technologies. In the study, the authors propose a novel waveform design by using spread spectrum technology and OFDM modulation, and derive the ambiguity function (AF) of integrated waveform. The theoretical analysis shows that the correlations of spread spectrum code and modulation communication data have influence on the performance of integrated signal AF. The analysis of integrated signal is transformed into the performance analysis of pseudo-random sequence. According to the simulation, different Settings of the spread factor have some influence on the sidelobe value of the range AF, and performance of the Gold sequence is better in proposed method. This conclusion can be used to realize integration of radar and communication.