The new detection method of DS signal based on ICA in aeronautics communications

In modern aeronautical communication system, researchers find it hard to distinguish signals considering the fact that receiver intercepts various and overlapping band signals, so how to detect the desired DS signal from multiple signals becomes a problem in the aeronautics communication. According to the multiple antennas structure of the aeronautical communication, this technique gives us a new detection method of DS signal which is suitable for aeronautics communication and different from the traditional methods of multiple signals detection. This new method introduces the Independent Component Analysis Technology in the part of the Pretreatment to overcome a number of overlapping signal band and the cross-spectrum signal when it is difficult to be separated. This method also improves the DS signal detection and identification of parameters in the sequential parts, and enhances the recognition accuracy. Finally, the simulation results prove that the detection method is effective. If the decision parameters are adjusted appropriately, this method will also apply to other communication signals detection.