| GPS/INS超紧耦合方法及其应用分析 |
| |
| 作者姓名： | 董晓明 孙迅 |
| |
| 作者单位： | 北京遥测技术研究所; |
| |
| 摘 要： | 超紧耦合是GPS/INS组合导航系统的最新研究方向,它采用INS测得的载体动态信息辅助GPS接收机跟踪环路,消除卫星信号中由于载体与卫星之间相对运动所产生的频率偏移,提高接收机在高动态环境下载波跟踪性能,同时还可以压缩带宽,有效增强接收机抗干扰性能。介绍GPS/INS超紧耦合技术,给出INS辅助GPS载波跟踪环路结构图和相应的数学模型,分析INS辅助GPS跟踪环路在动态环境下的动态残留及其对环路相位误差的影响,并进行了模型仿真,最后对仿真结果进行了验证分析。仿真结果显示,辅助动态残留及其导致的环路相位误差的大小与加加速度、环路辅助时间间隔成正比。
|
| 关 键 词： | 超紧耦合 辅助环路 数学模型 残留动态 |
GPS/INS Ultra-Tightly Coupled Technique and Its Application Analysis |
| |
| Authors: | Dong Xiaoming Sun Xun |
| |
| Institution: | Dong Xiaoming,Sun Xun |
| |
| Abstract: | As the latest research aspect of GPS/INS integration navigation system,the ultra-tightly coupled system uses the vehicle dynamic information measured by INS(Inertial Navigation System) to aid the GPS tracking loop,so as to eliminate the frequency shift in the received satellite signals caused by the relative motion between vehicle and satellites,improve the carrier tracking performance of the receiver in high dynamic environments,compress the loop bandwidth,and effectively enhance the anti-jamming abili-ty ... |
| |
| Keywords: | Ultra-tightly coupled Aided loop Mathematic model Residual dynamic |
| 本文献已被 CNKI 等数据库收录！ |
|
