CAJ | 학술논문

地磁辅助导航是组合导航技术的新方向,而导航误差的研究是分析惯性/地磁组合导航性能的重要内容之一.以等高或近似等高飞行的巡航飞行器为应用对象,建立了惯性/地磁组合导航系统的卡尔曼滤波器;通过仿真结果并结合理论分析重点讨论了校正方式、惯性器件测量精度、地磁场特征与磁测误差、基准图的网格间距、滤波周期、初始位置与初始速度误差等各种因素对位置和速度等导航误差的影响.
지자보조도항시조합도항기술적신방향,이도항오차적연구시분석관성/지자조합도항성능적중요내용지일.이등고혹근사등고비행적순항비행기위응용대상,건립료관성/지자조합도항계통적잡이만려파기;통과방진결과병결합이론분석중점토론료교정방식、관성기건측량정도、지자장특정여자측오차、기준도적망격간거、려파주기、초시위치여초시속도오차등각충인소대위치화속도등도항오차적영향.
Geomagnetic aided navigation is a new branch of integrated navigation technology, and the research on navigation error is an important part in analyzing the performance of inertial/geomagnetic integrated navigation system. This paper chooses the cruise aircraft flying at a constant or near constant height as its application object, establishes a Kalman filter for the inertial/geomagnetic integrated navigation system, and discusses the influences of each factor on the position and velocity errors by theoretical analysis and simulation results. These factors include revised method, accuracy of inertial sensors, geomagnetic feature, measurement error of magnetometer, grid interval of geomagnetic map, filtering period, and initial navigation errors.