非陀螺快速找北系统

提出一种新型的非陀螺找北系统。将一只加速度计安装在恒速转台上，利用Ｃｏｒｉｏｌｉｓ效应测量地球速率的水平分量，实现找北过程。由基座倾斜引起的误差可以通过解析调平加以补偿。采用多周期重复测量方法可以有效地抑制加速度计的测量噪声，提高系统的找北精度。转台恒速控制和信号处理器中的带通滤波器、整周期积分器是影响找北精度的关键技术。文中给出了其原理框图。该找北系统具有快速、高精度和低成本等优点，特别适合军事应用的需要

Fast nongyroscopic north seeking system

Based on Coriolis effect, it seeked the north by measuring the horizontal component of the earth rate with a linear accelerometer installed on a highspeed rotating table. The error due to the base inclination could be compensated with analytical leveling and the measuring noise of the accelerometer can be effectively attenuated by multi period repeating measurement. The key techniques affecting the north seeking accuracy were the constant speed control of the table, the band pass filter and the whole period integrator of the signal processor. Their schematic block diagrams were also presented. The nongyroscopic north seeking system is especially suitable to the military application because of its fast reaction, high accuracy and low cost.