非陀螺寻北仪信号处理电路的设计与实现

Design and Implementation of Non-gyro North Finder Signal Processing Circuit

非陀螺寻北是一种新颖的寻北技术。介绍其寻北的原理以及输出信号处理电路的设计思路,详细阐述带通滤波器、数字正交运算电路以及数字滤波电路的设计方案及实现。正交运算和数字滤波采用专用的数字芯片来完成,使系统既能克服模拟电路固有的误差和系统的不稳定等不足,又减轻DSP的运算负担,满足了非陀螺寻北仪信号处理的高精度和快速性要求,从而使得非陀螺寻北技术由理论研究转化为实用仪器装备成为了可能。

Non- gyro north finder is a novel finding north technology. The principles of its north- seeking and output signal processing circuit design are introduced, the implementation of bandpass filter, digital quadrature computing circuit and digital filter circuit are described. Orthogonal computing and digital filtering using a dedicated digital chips to complete, the system can overcome the error inherent in analog circuits and system instability, such as inadequate,it also can reduce the DSP computational burden, meet non- gyro north finder signal processing requirements of high precision and fast,allow non- gyro north - seeking technology from theoretical research into practical equipment has become possible.