CAJ | 학술논문

针对传统的单历元奇偶矢量接收机自主完好性监测方法无法检测伪距误差较小情况的缺陷，提出一种基于多历元相关距离的监测方法。该方法通过构造奇偶矢量多历元叠加矩阵，将N个历元的伪距信息进行整合，其中的固定偏差量得到累积，而由噪声引起的偏差互相抵消，然后用归一化相关距离检测出存在故障的卫星。仿真表明，该方法可有效检测静态和低动态条件下存在慢变伪距偏差的情况，当单星存在0.5 m 偏差时，检测概率提高到95%以上，双星存在0.5 m以内偏差也可以提高到60%以上。
침대전통적단역원기우시량접수궤자주완호성감측방법무법검측위거오차교소정황적결함，제출일충기우다역원상관거리적감측방법。해방법통과구조기우시량다역원첩가구진，장N개역원적위거신식진행정합，기중적고정편차량득도루적，이유조성인기적편차호상저소，연후용귀일화상관거리검측출존재고장적위성。방진표명，해방법가유효검측정태화저동태조건하존재만변위거편차적정황，당단성존재0.5 m 편차시，검측개솔제고도95%이상，쌍성존재0.5 m이내편차야가이제고도60%이상。
For the basis of parity vector,traditional method with one epoch can not work well on since pseudo-range deviation.This paper put forward an improved correlation distance method with more than one epoch for receiver autonomous integrity monitoring,combined with normalized correlation distance principle.The simula-tion results showed that this new RAIM algorithm worked well on the since slowly varying pseudo-range devia-tion under static and low dynamic conditions.The detection probability was increased up to 95% when 0.5 m pseudo-range deviation existing in one of the satellites available,and the two of the satellites,which was in-creased up to 60%.