摘要
Abstract
Once enemy is near to our platform or locates in the direction of the main lobe,our platform signal faces the risk of radio frequency exposure induced by the specific signal characteristics of directional communication.A radio stealth directional communication waveform based on signal characteristics randomization is proposed.By introduction of sidelobe level criterion,signal characteristics stationarity criterion from target direction,and signal characteristics randomization criterion from non-target direction,several optimal array sets are constructed to randomly select array group for directional communication,contributing to maxizing signal distortion from non-target direction with minimal signal distortion from target direction and greatly enhancing the sidelobe signal interception difficultly of enemy platform.Furthermore,a stochastic process is utilized to insert noise phase into phase modulation signal,destroying mainlobe signal inherent characteristics for the enhancement of mainlobe signal anti-demodulation and anti-recognition ability.Simulation results indicate that the modulation recognition probability and the error symbol rate of proposed radio stealth directional communication waveform based on signal characteristics randomization are 0 and 0.48 respectively facing the enemy platform,while our communication receiving performance loss is only 0.1 dB.关键词
定向通信/隐身波形/特征随机化/识别性能/解调性能Key words
directional communication/radio stealth waveform/characteristics randomization/recognition performance/demodulation performance分类
信息技术与安全科学
