基于噪声调相干扰寄生扩频的隐蔽信息传输

在常见的各种信息隐蔽传输方法中,宿主载体大多集中于图像、音频、视频等各类多媒体信源,而通过射频信号作为载体来实施隐蔽信息传输的技术手段十分缺乏。针对这一情况,提出了一种基于噪声调相干扰寄生扩频的隐蔽信息传输方法。在干扰机对雷达、通信等目标对象发射噪声压制干扰信号的同时,将需要传输的信息寄生调制于噪声干扰的相位分量,形成一种类扩频传输信号,并有效隐藏于大功率干扰信号之中实现传输。在接收端通过解扩处理而恢复出隐藏的调制分量,最后解调出其中所隐蔽承载的数字比特流。仿真试验结果显示了该方法的可行性与有效性,这对于电子对抗设备的综合一体化应用和隐蔽通信的实施提供了新的技术途径。

Concealed Information Transmission Based on Spread Spectrum Parasitizing on Noise Phase Modulated Jamming Signal

Currently,a majority of hosts are almost all kinds of multimedia sources,such as image,audio,video and so on,for concealed information transmission. The radio signal is infrequently considered as the carrier in this application. The new method about concealed information transmission based on spread spectrum parasitizing on noise phase modulated jamming signal is put forward in this paper. When the noise oppressive jamming signals are transmitted to the objects, such as telecommunication station,radar,and so on,the information bits parasitize on noise phase modulated jamming signal,which is like the spread spectrum. They efficiently conceal in the high power jamming signals. The concealed component can be recovered by de-spread process at the receiver and the digital bits are demodulated in the end. The simulation results show the feasibility and validity of this method. It is a new technique for electronic warfare equipment integration and concealed communication.