Star sensor navigational star screening method by orthogonal list

A technology of star sensor and cross-link table, which is applied in the field of astronomical navigation, can solve the problems of seldom considering the position of stars, the uniformity of the distribution of navigation stars, and the uneven distribution of navigation stars, etc., so as to quickly search and judge the star image area, navigation Uniform distribution of stars and fast speed effect
CN102865865AInactive Publication Date: 2013-01-09CHANGZHOU INST OF TECH +1
2 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGZHOU INST OF TECH
Publication Date
2013-01-09
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a star sensor navigational star screening method by an orthogonal list, comprising the following steps of: 1, carrying out star filtering treatment on the original star catalogue of the whole celestial sphere according to the limit star of a star sensor and the like, and confirming the threshold value Nth of star number; 2, setting the number of the residual stars of the star sensor within a current sky area view field as N, if N is less than or equal to Nth, selecting the residual stars as navigational stars, and carrying out step 3, and if N is larger than Nth, cutting and screening the navigational stars within the current sky area view field by a multi-scale image surface; and 3, after screening of the navigational stars of the current sky area view field is completed, transferring the star sensor to the next position, and repeating the step (2) to screen the navigational stars till going through all the celestial sphere. According to the multi-scale image plane cutting and screening method disclosed by the invention, the redundant stars within a star distribution high intensity sky area can be eliminated along with the star number change of different sky areas, all the stars within a low-intensity sky region can be remained, and the screened navigational stars are evenly distributed.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of celestial navigation, and relates to a method for screening navigation stars by a star sensor using a cross-link list. Background technique

[0002] The star sensor recognizes the star map, compares the characteristics of the observation star group and the navigation star group, identifies the observation star, determines their coordinates in the body coordinate system and the inertial coordinate system, and then measures the satellite attitude. It is a modern aerospace field. The most accurate satellite attitude measurement instrument. Star map recognition is the core technology of the star sensor. Establishing a navigation star library is an important prerequisite for star map recognition. Reasonable selection of navigation stars can reduce the similarity of navigation star group features, improve star map recognition speed and success rate, and enhance star map recognition. It is of great significance...

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