CN103185888A - Satellite positioning method based on satellite health information judgment - Google Patents
Satellite positioning method based on satellite health information judgment Download PDFInfo
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- CN103185888A CN103185888A CN2011104443058A CN201110444305A CN103185888A CN 103185888 A CN103185888 A CN 103185888A CN 2011104443058 A CN2011104443058 A CN 2011104443058A CN 201110444305 A CN201110444305 A CN 201110444305A CN 103185888 A CN103185888 A CN 103185888A
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- 238000000034 method Methods 0.000 title claims abstract description 20
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- 230000003862 health status Effects 0.000 description 2
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Abstract
The invention relates to a satellite positioning method based on satellite health information judgment. Satellites include GEO (geostationary orbit) satellites and non-GEO satellites. The method comprises the steps of I, receiving a signal of one GEO satellite and demodulating health information of all the satellites, and II, judging the demodulated health information and selecting signals of the healthy satellites for positioning. With the adoption of the technical scheme, a satellite receiving terminal can preferentially select the signals emitted by the satellites in normal working states for the positioning according to the health conditions of the satellites, so that the positioning precision is improved, and the positioning time is shortened.
Description
Technical field
The present invention relates to a kind of satellite positioning method, especially satellite positioning method of judging based on satellite health information of the Big Dipper 2 generation satellite navigation system.
Background technology
Beidou satellite navigation system is the Chinese independent development capability of implementing, the GPS (Global Position System) of independent operating.Its space segment comprises 5 satellites of the earth (GEO) and 30 non-geo satellites (MEO/IGSO).Geostationary orbit satellite (GEO) lays respectively at east longitude 58.75 degree, 80 degree, 110.5 degree, 140 degree and 160 degree.Non-geo satellite is made up of 27 middle circular orbit satellites (MEO) and 3 inclination geosynchronous satellites (IGSO).Along with improving and popularization of Beidou satellite navigation and positioning system, will be more and more universal based on the locating terminal of dipper system.Utilize at present in the technology that Big Dipper satellite signal positions, all be to adopt the method that receives the Big Dipper satellite signal location at random, if in the satellite-signal that receives, the satellite that has is in bad duty, use its satellite-signal that sends to influence the location of receiving terminal, thereby reduce bearing accuracy and increasing needed time of location.
Summary of the invention
The objective of the invention is, the satellite positioning method of judging based on satellite health information in a kind of Beidou satellite navigation system is provided.
The invention provides a kind of satellite positioning method of judging based on satellite health information, described satellite comprises GEO satellite and non-GEO satellite, and described method comprises: step 1, receive the signal of a described GEO satellite, and demodulate the health and fitness information of all satellites; Step 2 is judged the described health and fitness information that demodulates, and selects healthy satellite to position.
Further, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
Further, described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
Further, described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
Further, described satellite positioning method is used for the Big Dipper 2 generation satellite navigation system.
The present invention also provides a kind of satellite navigation receiver of using above-mentioned satellite positioning method.
Further, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
Further, described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
Further, described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
Further, described satellite navigation receiver is the Big Dipper 2 generation satellite navigation receiver.
After adopting technical scheme of the present invention, satellite receiving terminal can be according to the health condition of satellite, and the signal that the preferential normal satellite of selection work state sends positions, and can improve locating accuracy, shortens positioning time.
Description of drawings
Fig. 1 is the schematic flow sheet of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Table 1 is in the Big Dipper 2 generation satellite navigation system, relates to the classification of satellite health supplementary and the characteristics of broadcasting in the satellite-signal, in the satellite message information that receives, has comprised 9 bit informations (Hea) of 30 satellite health.
Table 1: satellite health supplementary classification and broadcast characteristics
Table 2 is in the satellite-signal, comprises 9 bit informations and the corresponding definition of 30 satellite health.Satellite health information Heai(i=1 ~ 30) be 9bit, most significant digit (the 9th) is the satellite clock health and fitness information, and " 0 " expression satellite clock can be used, " 1 " expression satellite clock is unavailable, middle 6 is satellite-signal health status, and last 2 is information health status, and its definition sees the following form:
Table 2: satellite health 9 bit informations and corresponding definition
Accompanying drawing 1 is the schematic flow sheet of the embodiment of the invention, in this enforcement, at first receiver starts working 101, receive GEO satellite-signal 102, and judge this GEO satellite whether healthy 103, otherwise receiving another GEO satellite 104 again judges, it is the health and fitness information 105 of then reconciling out all satellites according to this GEO satellite-signal, one by one the health and fitness information of satellite is judged: satellite clock information whether normal 106, otherwise skip this satellite, judge the health and fitness information 107 of another satellite, be to continue then to judge whether the frequency signal is normal, otherwise skipping this satellite, judge the health and fitness information 107 of another satellite, is then to receive healthy satellite-signal 109 and utilize healthy satellite-signal to position 110.Need to prove that estimative frequency signal can be the signal of B1 and/or B2 and/or B3 frequency.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. satellite positioning method of judging based on satellite health information, described satellite comprises GEO satellite and non-GEO satellite, it is characterized in that described method comprises:
Step 1 receives the signal of a described GEO satellite, demodulates the health and fitness information of all satellites;
Step 2 is judged the described health and fitness information that demodulates, and selects healthy satellite to position.
2. satellite positioning method according to claim 1 is characterized in that, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
3. according to claim 1 and 2 described satellite positioning methods, it is characterized in that described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
4. according to the described satellite positioning method of claim 1 to 3, it is characterized in that described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
5. according to the described satellite positioning method of claim 1 to 4, it is characterized in that described satellite positioning method is used for the Big Dipper 2 generation satellite navigation system.
6. use the satellite navigation receiver of method according to claim 1 for one kind.
7. satellite navigation receiver according to claim 6 is characterized in that, the described GEO satellite of described step 1 itself is healthy, otherwise reselects the GEO satellite of a health.
8. according to claim 6 and 7 described satellite navigation receivers, it is characterized in that described health and fitness information comprises the signal health and fitness information of satellite clock health and fitness information and first frequency and/or second frequency and/or the 3rd frequency.
9. according to the described satellite navigation receiver of claim 6 to 8, it is characterized in that: described first frequency, second frequency and the 3rd frequency are respectively B1 frequency, B2 frequency and B3 frequency.
10. according to the described satellite navigation receiver of claim 6 to 9, it is characterized in that: described satellite navigation receiver is the Big Dipper 2 generation satellite navigation receiver.
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| CN201110444305.8A CN103185888B (en) | 2011-12-27 | 2011-12-27 | A kind of satellite positioning method judged based on satellite health information |
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| CN201110444305.8A CN103185888B (en) | 2011-12-27 | 2011-12-27 | A kind of satellite positioning method judged based on satellite health information |
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| CN103185888A true CN103185888A (en) | 2013-07-03 |
| CN103185888B CN103185888B (en) | 2015-08-19 |
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| CN110231637A (en) * | 2018-03-05 | 2019-09-13 | 中移物联网有限公司 | A kind of choosing method of satellite, server and computer storage medium |
| CN111913201A (en) * | 2020-07-07 | 2020-11-10 | 和芯星通科技(北京)有限公司 | GNSS differential positioning method and device and computer readable storage medium |
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| CN111913201B (en) * | 2020-07-07 | 2023-03-14 | 和芯星通科技(北京)有限公司 | GNSS differential positioning method and device and computer readable storage medium |
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Inventor after: Lin Mulong Inventor after: Gao Feng Inventor after: Xu Xiangbin Inventor after: He Yihua Inventor after: Cao Lin Inventor before: Lin Mulong Inventor before: He Yihua Inventor before: Cao Lin |
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Denomination of invention: A satellite positioning method based on satellite health information judgment Effective date of registration: 20220630 Granted publication date: 20150819 Pledgee: Societe Generale Bank Limited by Share Ltd. Guangzhou branch Pledgor: TECHTOTOP MICROELECTRONICS Co.,Ltd. Registration number: Y2022980009607 |
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Granted publication date: 20150819 Pledgee: Societe Generale Bank Limited by Share Ltd. Guangzhou branch Pledgor: TECHTOTOP MICROELECTRONICS Co.,Ltd. Registration number: Y2022980009607 |