Spatial Target Retrieval Method Based on Improved TLE Files

Abstract

This invention discloses a space target retrieval method based on an improved TLE file, capable of numbering and retrieving more than 99,999 space targets. The method involves retrieving the space target sequence number from satellite data and determining if the value is greater than 99,999. If not, the existing TLE numbering rules are used to generate a TLE file; otherwise, columns 3 to 7 of rows 1 and 2 are set to 00000, and row 0 is set to record at least the space target sequence number, resulting in an improved TLE file for satellite data. Using the TLE file, the method checks if columns 3 to 7 of rows 1 and 2 are 00000. If so, the space target sequence number recorded in row 0 is read, and other data of the corresponding satellite is retrieved from other parts. Otherwise, columns 3 to 7 of row 1 or row 2 are read as the space target sequence number, and other data of the corresponding satellite is retrieved from other parts.

Description

Technical Field

[0001] This invention relates to the field of aerospace technology, and more specifically to a spatial target retrieval method based on an improved TLE file. Background Technology

[0002] With the advancement of human technology and the development of the global space industry, an increasing number of spacecraft are being sent into space. According to publicly available cataloging data from CelesTrak, as of December 31, 2021, there were 50,725 cataloged space targets in space. Statistical models estimate that there are currently approximately 34,000 pieces of debris larger than 10cm in orbit, approximately 900,000 pieces between 1cm and 10cm, and over 120 million pieces between 1mm and 1cm. However, the North American Aerospace Defense Command (NORAD) defines space target numbers in its Two-Line Element (TLE) data using only 5 digits. This means that the existing TLE can only describe a maximum of 99,999 space targets (from 1 to 99,999, with 0 unused).

[0003] Therefore, how to address the fact that existing TLE definition rules cannot number and retrieve more than 99,999 spatial targets is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a spatial target retrieval method based on an improved TLE file, which can number and retrieve more than 99,999 spatial targets.

[0005] To achieve the above objectives, the technical solution of the present invention includes the following steps:

[0006] Acquire satellite data, extract the space target serial numbers from the satellite data, and determine whether the value of the space target serial number is greater than 99999. If the space target serial number is not greater than 99999, number the satellite data using the existing TLE numbering rules to obtain a TLE file. If the space target serial number is greater than 99999, set the space target numbers in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 to 00000, and set at least the space target serial number to be recorded in row 0 to obtain an improved TLE file for the satellite data.

[0007] Using the TLE file, check if the space target number in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 is 00000. If so, read the space target sequence number recorded in row 0 and read other data of the satellite corresponding to that space target sequence number from other parts.

[0008] If the space target number in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 is not 00000, then columns 3 to 7 of row 1 or columns 3 to 7 of row 2 are read as the space target number, and other data of the satellite corresponding to the space target number are read from other parts.

[0009] Furthermore, if the spatial target number is greater than 99999, the spatial target number in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 is set to 00000, and the spatial target name is recorded in row 0 in addition to the spatial target number.

[0010] Furthermore, if the spatial target number is greater than 99999, the spatial target number in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 is set to 00000. In addition to recording the spatial target number, the spatial target name is also recorded in row 0. A symbol is written between the spatial target number and the spatial target name.

[0011] Furthermore, the symbols added between the spatial target number and the spatial target name include one of the following: space, comma, period, colon, exclamation mark, plus sign, minus sign, multiplication sign, division sign, question mark, hash sign, and percent sign.

[0012] Furthermore, using the improved TLE file, it is detected whether the space target number in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 is 00000. If so, the space target sequence number recorded in row 0 is read, and the recorded space target name is also read.

[0013] Beneficial effects:

[0014] 1. This invention provides a spatial target retrieval method based on an improved TLE file, which uses existing TLE rules to number spatial targets when the spatial target number is greater than 99999. This method involves inputting the spatial target number and finally realizing the method of numbering spatial targets using existing TLE rules when the spatial target number is greater than 99999.

[0015] 2. The spatial target retrieval method based on the improved TLE file provided by this invention is compatible with existing TLE file rules, has good compatibility, low computational complexity, fast running speed, simple algorithm, and is easy to implement in engineering.

[0016] 3. The spatial target retrieval method based on an improved TLE file provided by this invention can theoretically utilize all 24 bits of the 0th line of the TLE file for spatial target numbering, which means that it can retrieve 10... 24 Each space target is numbered, while the existing TLE rule can only be used for (10) space targets.5 -1) spatial targets are numbered. Attached Figure Description

[0017] Figure 1 This is a flowchart of a spatial target retrieval method based on improved TLE files. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] This invention provides a spatial target retrieval method based on improved TLE files, such as... Figure 1 As shown, it includes the following steps:

[0020] The process involves acquiring satellite data, extracting the space target serial numbers from the satellite data, and determining whether the value of the space target serial number is greater than 99999. If the space target serial number is not greater than 99999, the satellite data is numbered using existing TLE numbering rules to obtain a TLE file. If the space target serial number is greater than 99999, the space target serial numbers in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 are set to 00000, and row 0 is set to record at least the space target serial number, resulting in an improved TLE file for the satellite data. In this embodiment, row 0 also records the space target name, and the symbol added between the space target serial number and the space target name includes one of the following: space, comma, period, colon, exclamation mark, plus sign, minus sign, multiplication sign, division sign, question mark, hash sign, and percentage sign. During reading, the recorded space target name can also be read.

[0021] Using the TLE file, check if the space target number in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 is 00000. If so, read the space target sequence number recorded in row 0 and read other data of the satellite corresponding to that space target sequence number from other parts.

[0022] If the space target number in columns 3 to 7 of row 1 and columns 3 to 7 of row 2 is not 00000, then columns 3 to 7 of row 1 or columns 3 to 7 of row 2 are read as the space target number, and other data of the satellite corresponding to the space target number are read from other parts.

[0023] In one embodiment, the NORAD standard TLE format is defined as follows:

[0024] The data for each satellite consists of three lines in the following format:

[0025] AAAAAAAAAAAAAAAAAAAAAAAA

[0026] 1BBBBBCDDEEEFFF GGHHH.HHHHHHHH+.IIIIIIIII+JJJJJ-J+KKKKK-K L MMMMN

[0027] 2BBBBB OOO.OOOO PPP.PPPP QQQQQQQ RRR.RRRR SSS.SSSS TT.TTTTTTTTTUUUUUV

[0028] Line 0 contains a 24-character name.

[0029] Lines 1 and 2 are in the standard two-line track element set format. The format is explained below:

[0030] Table 1 Standard Two-Line Track Element Set, Row 1 Format Definition

[0031]

[0032]

[0033] Table 2 Standard Two-Line Track Element Set, Row 2 Format Definition

[0034] Column number meaning symbol 01 line number 2 03-07 Satellite number BBBBB 09-16 Track inclination (degrees) OOO.OOOO 18-25 Right ascension (degrees) of the ascending node of the orbit PPP.PPPP 27-33 Orbital eccentricity QQQQQQQ 35-42 Argument of perigee (degrees) RRR.RRRR 44-51 Near point angle (degrees) SSS.SSSS 53-63 Number of times the Earth orbits each day TT.TTTTTTTT 64-68 Number of orbits since launch UUUUU 69 Checksum V

[0035] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for retrieving space objects based on an improved TLE file, characterized in that, The method comprises the following steps: Obtaining satellite data, taking the space target serial number in the satellite data, judging whether the value of the space target serial number is greater than 99999; if the space target serial number is not greater than 99999, using the existing TLE numbering rule to number the satellite data to obtain a TLE file; if the space target serial number is greater than 99999, setting the space target serial number in columns 3-7 of the first row and columns 3-7 of the second row as 00000, and setting at least the space target serial number in the 0th row to obtain an improved TLE file for the satellite data; Using the TLE file, detecting whether columns 3-7 of the first row and columns 3-7 of the second row are 00000, if yes, reading the space target serial number recorded in the 0th row and reading other data of the satellite corresponding to the space target serial number from other parts; If columns 3-7 of the first row and columns 3-7 of the second row are not 00000, reading columns 3-7 of the first row or columns 3-7 of the second row as the space target serial number, and reading other data of the satellite corresponding to the space target serial number from other parts.

2. The space object retrieval method based on the improved TLE file according to claim 1, wherein, If the space target serial number is greater than 99999, setting the space target serial number in columns 3-7 of the first row and columns 3-7 of the second row as 00000, and setting at least the space target serial number in the 0th row to record the space target name.

3. The space object retrieval method based on the improved TLE file according to claim 1 or 2, characterized in that, If the space target serial number is greater than 99999, setting the space target serial number in columns 3-7 of the first row and columns 3-7 of the second row as 00000, and setting at least the space target serial number in the 0th row to record the space target name, and writing a symbol between the space target serial number and the space target name.

4. The space object retrieval method based on the improved TLE file according to claim 3, characterized in that, The symbol added between the space target serial number and the space target name comprises one of a space, a comma, a period, a colon, an exclamation mark, a plus sign, a minus sign, a multiplication sign, a division sign, a question mark, a hash sign and a percentage sign.

5. The space object retrieval method based on the improved TLE file according to claim 3, characterized in that, The improved TLE file is used to detect whether the space target serial number in columns 3-7 of the first row and columns 3-7 of the second row is 00000, if yes, the space target name recorded is read.

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