A Calibration Method of Shaft System Parameters in Celestial Navigation System
An astronomical navigation and shafting technology, applied in the field of astronomical navigation, can solve problems such as low accuracy, high calibration conditions, and inability to measure shafting errors, and achieve the effect of reducing the requirements of weather conditions and improving accuracy
Active Publication Date: 2022-03-01
HUAZHONG PHOTOELECTRIC TECH INST (CHINA SHIPBUILDING IND CORP THE NO 717 INST)
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of this, the embodiment of the present invention provides a method for calibrating the axis parameters of the celestial navigation system, which is used to solve the problem that the axis error parameter calibration cannot measure the axis error after assembly, or the calibration conditions are relatively high and the accuracy is relatively high. lower question
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] It should be understood that the term "comprising" and other expressions with similar meanings in the specification or claims of the present invention and the above drawings mean to cover non-exclusive inclusion, such as a process, method or system, equipment comprising a series of steps or units There is no limitation to the steps...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method for calibrating axis system parameters of an astronomical navigation system. The method includes: locking the active axis system of a star tracker to be tested and installing it on a two-axis turntable, recording the zero offset value of the star tracker; The azimuth and elevation zero position of the reference star, and record the original value of the angle measurement of the azimuth and elevation components of the turntable as the zero offset value; respectively deduct the zero offset value of the star tracker to be measured and the zero offset value of the turntable; calibrate the dome The azimuth and elevation angle of the simulated star targets are taken as the theoretical position values of each simulated star target; the star tracker axis system is used to track and measure the simulated star targets, and the measured position values of each simulated star target are recorded; The theoretical position value and the measured position value are combined with the shaft error model to solve the shaft error parameters of the celestial navigation system. Through this scheme, the shafting error parameter calibration can be completed indoors without accurate installation attitude information, and the calibration accuracy of the shafting error of the celestial navigation system can be significantly improved.
Description
technical field [0001] The invention belongs to the field of celestial navigation, in particular to a method for calibrating axis system parameters of a celestial navigation system. Background technique [0002] The small field of view celestial navigation system usually includes a control and tracking shaft system, which inevitably has shaft system errors during the processing and assembly process. Axis system errors include boresight azimuth deviation, azimuth and pitch non-orthogonal deviation, and pitch angle measurement zero position deviation, etc., which will cause the actual pointing of the star measuring optical axis to be inconsistent with the measurement value of the goniometer element, affecting the measurement accuracy of the star target in the astronomical navigation system, thereby limiting Improvement of positioning and orientation performance of celestial navigation system. [0003] At present, the shafting error parameter calibration schemes include the op...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 段溪川陈志凌白亚龙谢伦治
Owner HUAZHONG PHOTOELECTRIC TECH INST (CHINA SHIPBUILDING IND CORP THE NO 717 INST)