论文部分内容阅读
为了充分利用新一代复合卫星导航信号数据分量和导频分量的功率,提出了差分联合数据/导频信道组合捕获技术,包括差分比较信道组合技术和差分相干信道组合技术。通过数学分析,证明了新建差分联合数据/导频信道组合捕获技术的虚警概率和检测概率的解析表达式。为了支持理论分析,运用Monte Carlo仿真对提出的捕获技术进行性能分析。分析结果表明,新建捕获技术比传统捕获方法能够提供更加优良的性能,提高了卫星导航接收机在弱信号环境下的捕获灵敏度。
In order to make full use of the power of the next generation of composite satellite navigation signal data components and pilot components, a novel combined data / pilot channel combination acquisition technique is proposed, which includes differential comparison channel combination technique and differential coherent channel combination technique. Through mathematical analysis, the analytical expressions of false alarm probability and detection probability of the new differential joint data / pilot channel combination acquisition technology are proved. In order to support the theoretical analysis, the Monte Carlo simulation is used to analyze the performance of the proposed acquisition technique. The analysis results show that the new acquisition technology can provide more excellent performance than the traditional acquisition method and improve the acquisition sensitivity of the satellite navigation receiver in the weak signal environment.