基于光电导航的伪卫星空中基站定位算法

摘要

Due to the stronger anti-jamming capability and flexibility compared with orbiting satellites, pseudolite-based positioning systems provide more precise navigation information. To position precisely for airborne pseudolites is one of the key technique to construct the pseudolite-based regional positioning system. The positioning algorithm based on electro-optical navigation was studied. The error model was established according to the characteristics of airborne pseudolites and the least-squares method was employed to estimate the position errors using the information from images and inertial navigation system. The simulation results indicate that the algorithm proposed is feasible and has great practical value.%由于具有抗干扰能力强和布置灵活机动的特点,伪卫星在增强卫星系统和独立组网为用户提供更高精度导航定位信息方面具有广阔的应用前景.伪卫星空中基站的精确定位是构建伪卫星区域定位系统的一个关键问题.为此,研究了一种基于光电导航的定位算法,综合利用光电探测成像信息和惯性导航信息,根据伪卫星空中基站的特点建立了相应的误差模型,并采用最小二乘法估计位置误差.计算机仿真结果表明所提算法简单,具有较大的实用价值.