中文摘要：

针对伪卫星应用中存在的远近效应及与卫星导航信号的兼容性,提出了伪卫星发射脉冲信号的方法,用来消除远近效应问题,并对卫星信号和伪卫星脉冲信号的兼容性做了分析.首先根据脉冲占空比和信号信干比的关系确定所要采用的脉冲信号的占空比,然后分析此占空比的脉冲信号与卫星信号的兼容性,使得这一占空比在保证脉冲信号的强度下,既能消除远近效应,又可以与卫星信号保持良好的兼容.对脉冲信号和连续信号的捕获以及信号兼容进行仿真.最后利用小型伪卫星分别发射脉冲信号和连续信号,对两者干扰卫星信号的情况进行捕获.实验结果证明,本研究提出的脉冲信号可以有效地消除远近效应,并且保证伪卫星脉冲信号和卫星信号兼容共存.

英文摘要：

Pseudolites pulsed signal is presented to remove the near-far problem and the compatibility between pseudolites signals and GPS signals.In this method,the pulsed duty cycles should be determined by signal-to-interference ratio firstly.Then the compatibility between pseudolites pulsed signals and GPS signals is analyzed.The receiver captures pulsed signals and continuous signals to prove that pulsed signals can solve the near-far problem effectively get better compatibility.And then the receiver captures pulsed signals and continuous signals from small-sized pseudolites,the result proves that pseudolites pulsed signals can solve the near-far problem effectively and have better compatibility.