差分GPS辅助里程仪标定刻度因子  

Calibration of Odometer Scale Factor With Differential GPS

作　　者：张金红[1] 李岁劳[1] 杨洪友[2] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072 [2]西安飞行自动控制研究所,陕西西安710065

出　　处：《测控技术》2007年第7期20-22,25,共4页Measurement & Control Technology

摘　　要：针对一种软轴式高分辨率里程仪的刻度因子标定方法进行了较深入的试验研究。提出了用事后处理的DGPS来精确标定里程仪刻度因子的方法。多次试验结果表明,经标定后里程仪的纵向定位精度可以达到0.02%左右,表明了该标定方法可以有效提高里程仪的刻度因子准确性,使里程仪有可能应用于高精度定位。另外,设计了同步数据采集电路及上位机软件,保证了位置与脉冲的同步性。Assisting odometer to corroborate scale factor with difference GPS is studied. The post-flight processing algorithm for DGPS is suggested to bind scale factor accurately. Lot＇ s of experiment results show that the positioning precision reach to 2×10^-4 quantity, which demonstrates the method is valid and feasible to improve the odometer scale factor accuracy, the research is useful for the development of OD in high-accuracy position, Additionally, to ensure the synchronous pules and positions, the synchronous data acquisition circuits and senior computer softdesigned are employed.

关 键 词：差分GPS 里程仪 刻度因子 

分 类 号：V2[航空宇航科学技术]