导航BOC信号的抗干扰性能分析

Interference Effects on BOC Signals

二进制偏置载波(BOC)信号是一种新型的导航信号,其与传统扩频调制导航信号在性能上的差异是目前导航领域的关注重点之一。文章通过建立BOC信号接收系统的数学模型,针对窄带干扰、匹配谱干扰和带限白噪声干扰这几种典型的无线信道干扰,研究了BOC导航信号和传统扩频调制导航信号的抗干扰性能,并给出了几种典型导航信号的抗干扰性能参数。研究结果表明,BOC信号具有比传统扩频调制导航信号更强的抗干扰能力。

The binary offset carrier （BOC） signals, a new kind of signal used for navigation, were compared with traditional PN code navigation signals. The anti-jamming performance of BOC signals was analyzed by building a mathematical model of BOC signal receiver system. Three radio frequency （RF） interference signal models including carrier wave （CW） interference, matchingspectrum interference and limited-band Gaussian interference were researched. Some anti-jamming performance parameters of navigation signals already used in GPS and Galileo systems were also given. The result shows that BOC signals have a smaller effect on interference than that of the classical spread spectrum navigation ones.