摘要
提出了一种新型的大视场数字式太阳敏感器设计方法,其光学系统由全景环形光学镜头和滤光膜组成。该敏感器具有视场大、结构简单及功耗低的特点。从工作原理出发,建立了该敏感器模型,并利用搭建的实验平台,对敏感器进行精度标定。设计中,采用非线性最小均方最优解来确定模型中的参数。对测量误差进行分析,消除系统误差后,敏感器的测量精度由0.4°提高到0.02°。测试结果表明此太阳敏感器具有120°×180°的大视场和0.02°的测量精度,能很好满足视场要求较高的姿态确定系统。
A novel design of digital sun sensor with large field is presented.The optical system is composed of a filter and panoramic annular lens.This sun sensor has the following features：large field,simple structure and low power consumption.According to the mechanism of the sun sensor,both the model and calibration of the sensor are given based on the experiment platform.In this design,the parameters of the sensor model are determined using LMS method.The authors discussed the error analysis and removes the system error.The result of testing indicates that the sun senor has a large field of 120°×180°and a precision of 0.02°,and it can meet the requirement of attitude determination system because this system needs a large field.
出处
《传感技术学报》
CAS
CSCD
北大核心
2011年第3期336-341,共6页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(60904090)
