Analytical Estimation on Blind Source Separation in Space-based Dual-antenna Scenario
The anti-jamming technology based on blind source separation has important application value in many fields.In the common used dual-reception scenario for space-base data link,the computational complexity of traditional blind source separation method is relatively high,and it is difficult to carry out real-time processing,which limits the performance limit of blind source separation technology.By considering the single-path propagation paradigm of the expected signal and the interference signal in the space-based data link,an analytical solution method of blind source separation based on the fourth-order cumulant optimization function is proposed,and its closed solution is obtained.The proposed method reduces the computational complexity by nearly 67%while maintaining the estimation performance,and is more suitable for the hardware implementation of space-based data link with limited computing resources.At the same time,the proposed analytical method has a turnover probability of close to 0,which can further maintain the output order of separated signals,and is conducive to improving the estimation performance of signal arrival detection in the subsequent signal processing stage.
anti-interferenceblind source separationfourth order cumulantspace-based data link
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