摘要
针对目前使用的磁罗经体积重量大,消差操作依赖人工进行的不足,提出一种能够自动测校误差的数字式磁罗经系统。利用椭圆假设求解数字磁罗经的自差及相应的误差补偿方法,同时基于GPS信号的辅助,将船舶位置信息引入描述地球地磁磁差的八阶泰勒多项式中,得到在不同位置时的磁差修正值。然后经过计算机处理求得真实航向,完成对数字磁罗经的自动消差。
The paper proposes an error calibration strategy, which uses the ellipse hypothesis to reckon the error coefficients and compensate the errors. In addition, it introduces the latitude and longitude into the Thaler multinomial equation about magnetic deviation based on the help of GPS, to get the deviation of compensation in different place. Finally it gets the real course by computer processing. The characteristics of system based on the method are small size, low cost and high reliability, especially suitable for smaller watercrafts.
出处
《中国惯性技术学报》
EI
CSCD
2004年第5期31-35,共5页
Journal of Chinese Inertial Technology
