倾斜状态下数字天顶仪快速定位方法分析

张西辉; 周召发; 刘先一; 朱文勇

doi:doi:10.3788/irla201847.0217002

红外与激光工程, 2018, 47 (2): 0217002, 网络出版: 2018-04-26

倾斜状态下数字天顶仪快速定位方法分析

Analysis of the fast positioning method of digital zenith camera in tilt state

论文大纲

张西辉 ^*周召发刘先一朱文勇

作者单位

火箭军工程大学兵器发射理论与技术国家重点学科实验室, 陕西西安 710025

数字天顶仪倾斜状态切平面原理球面三角形法定位速度 digital zenith camera tilt state tangent plane principle spherical triangle method

摘要

针对数字天顶仪在精确调平状态下进行天文定位时存在耗费时间长, 定位速度慢的缺点, 从数字天顶仪的定位原理出发, 采用方向余弦矩阵转换原理建立了倾斜角的修正模型, 分析和推导了经过倾斜角修正之后的定位方法, 改进了倾斜状态下数字天顶仪的切平面和球面三角形两种定位算法。实现定位时设备不经精调平, 加快定位速度的目的。通过实验比较了在倾斜状态下经过改进后两种类型定位算法的定位精度。实验表明: 球面三角形法的定位精度相对较高, 经纬度计算精度能够达到0.5″以内。

Abstract

Aiming at the problem of long time and slow positioning speed when the digital zenith camera was in precise leveling state for astronomical positioning, based on the principle of positioning the digital zenith camera, the correction model of the inclination angle was established by the direction cosine matrix transformation principle, the positioning method after the correction of the tilt angle was analyzed and deduced, and the two kinds of localization algorithms of the tangent plane and the spherical triangle of the digital zenith were improved, achieved the positioning of equipment without fine leveling, speeded up the positioning speed of the purpose. The accuracy of the two types of positioning algorithms in the tilted state was compared by experiment. Experiments show that the positioning accuracy of the spherical triangle method is relatively high, and the calculation accuracy of the latitude and longitude can reach 0.5″ or less.positioning speed

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张西辉, 周召发, 刘先一, 朱文勇. 倾斜状态下数字天顶仪快速定位方法分析[J]. 红外与激光工程, 2018, 47(2): 0217002. Zhang Xihui, Zhou Zhaofa, Liu Xianyi, Zhu Wenyong. Analysis of the fast positioning method of digital zenith camera in tilt state[J]. Infrared and Laser Engineering, 2018, 47(2): 0217002.

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