CN105572708A - Rapid positioning method of beam lock losing of Beidou navigation satellite - Google Patents
Rapid positioning method of beam lock losing of Beidou navigation satellite Download PDFInfo
- Publication number
- CN105572708A CN105572708A CN201510986938.XA CN201510986938A CN105572708A CN 105572708 A CN105572708 A CN 105572708A CN 201510986938 A CN201510986938 A CN 201510986938A CN 105572708 A CN105572708 A CN 105572708A
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- China
- Prior art keywords
- frame
- interruption
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- value
- minute
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a rapid positioning method of beam lock losing of a Beidou navigation satellite. The problems that during cross-frame and super-frame of a Beidou satellite system, loss of lock of satellite beam signals easily occurs at a Beidou navigation terminal, the positioning solution time is long, and user experience is poor are solved. According to the method, interruption counting given by a baseband circuit is employed, 1 is added to the counting value at each interruption, and the times of the counting and each frame 31.25ms are synchronized. If the counting value is not reset, a counter will always increase the counting value; and the counter is reset when receiving to 1920 frames in a normal manner. When the interruption counting value is greater than 1920, it is indicated that loss of lock crosses 1920 frames, and the current frame number is assigned to the interruption counting value. When the update of ephemeris data is accomplished, the ephemeris data update accomplishment mark is set as 1; and when the updating of the ephemeris data is not accomplished or fails, the ephemeris data accomplishment mark is set as 0. Whether the loss of lock occurs in the cross-frame stage is determined via the extraction of corresponding data saved in the previous minute.
Description
Technical field
The present invention relates to Beidou satellite navigation technical field, be mainly concerned with the quick position solving technique of Beidou navigation terminal.
Background technology
Beidou navigation terminal is in use kept away unavoidably blocking of signal, occurs the situation of the unexpected losing lock of signal.And due to the singularity of Beidou satellite system, positioning calculation needs the almanac data using upper one minute at current minute, and under normal circumstances, the renewal of almanac data be across minute the frame moment carry out, so once fall the situation such as frame or losing lock at the moment, satnav resolves will wait for one minute again.Beidou satellite system is across the superframe moment, and satellite beams signal losing lock easily appears in Beidou navigation terminal, causes the positioning calculation time long, the problem that Consumer's Experience is poor.
Summary of the invention
Namely object of the present invention is a kind of method providing big-dipper satellite wave beam losing lock quick position to resolve, solve Beidou satellite system and occur in across the superframe moment in satellite beams signal losing lock that (namely receiver user received complete broadcast ephemeris data within one minute, just when not receiving frame number and being the subframe of 1920), the positioning calculation time is long, the problem that Consumer's Experience is poor.
Big Dipper almanac data is per minute all wants replay several times, as long as once receive complete almanac data at this arbitrarily several times, (being namely the moment receiving the 1920th subframe) at the last moment of this superframe carries out ephemeris renewal rewards theory, and all positioning calculations of next minute are exactly utilize the almanac data when last minute.So once satellite-signal is in the 1920th subframe moment losing lock, user can not position and resolve within next minute.This problem can solve by the following method.
1. produced by baseband circuit and interrupt count value (Intr_Counter), each count value of interrupting adds 1, and the time synchronized of each frame 31.25ms, but not by the impact do not received of subframe.If do not have clear 0, counter can increase always; If normally receive 1920 frames, counter is with regard to clear 0.
2. the current minute up-to-date frame number value of resolving each time is assigned to current frame number (FrameID), when interrupting count value and being greater than 1920, illustrate that losing lock spans 1920 frames (being namely a minute boundary value moment), at this moment current frame number is assigned to interruption count value, to ensure at satellite under normal circumstances like this, subframe numbers all the time with interruption count synchronization.
3. when almanac data has upgraded, almanac data upgrades complement mark (UpdateEphDoneFlag) and puts 1, sets to 0 when ephemeris does not upgrade or upgrade failed almanac data renewal complement mark.
Accompanying drawing explanation
Fig. 1 is the quick position processing flow chart of satellite beams losing lock.
Embodiment
Method flow is as follows.
1. judge when resolving broadcast ephemeris data that present sub-frame number is effective, namely the scope of subframe numbers value is between 1 to 1920, and interrupt count value (Intr_Counter) and be greater than 1920, then illustrate satellite losing lock across minute, do not receive this frame that frame number is 1920.Above two conditions meet simultaneously, then the value of sync break counter is the value of present sub-frame number, and almanac data now has not also just upgraded certainly, just almanac data is upgraded complement mark (UpdateEphDoneFlag) and sets to 0.
2. detect almanac data and upgrade complement mark (UpdateEphDoneFlag), if equal 0, then represent the renewal not completing almanac data, just extract again one minute year the number of minutes and current minute year the number of minutes value.If current minute year, the value value that equals one minute year the number of minutes of the number of minutes added 1, then represent that the almanac data of a minute is effective, can be used for the positioning calculation of current minute, upgrade almanac data, then almanac data is upgraded complement mark (UpdateEphDoneFlag) and put 1.
3. detect current frame number (FrameID) and whether equal 1920, if equal, then interrupt count value (Intr_Counter) clear 0.As shown in Figure 1.
Claims (3)
1. produce sync break according to the every frame of Big Dipper data (31.25ms), and complete interruption counting, upgrade complement mark by Counter Value and almanac data to go to judge whether losing lock occurred in across the frame stage, if occur across frame, extract the corresponding data preserved for a minute.
2. method according to claim 1, interrupts count value and is interrupted providing by base band, and each count value of interrupting adds 1, and the time synchronized of each frame 31.25ms, but not by the impact do not received of subframe; If do not have clear 0, counter can increase always; If normally receive 1920 frames, counter is with regard to clear 0.
3. method according to claim 1, the current minute up-to-date frame number value of resolving each time is assigned to current frame number, when interrupting count value and being greater than 1920, illustrate that losing lock spans 1920 frames (being namely a minute boundary value moment), at this moment current frame number is assigned to interruption count value, to ensure at satellite under normal circumstances like this, subframe numbers all the time with interruption count synchronization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510986938.XA CN105572708A (en) | 2015-12-26 | 2015-12-26 | Rapid positioning method of beam lock losing of Beidou navigation satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510986938.XA CN105572708A (en) | 2015-12-26 | 2015-12-26 | Rapid positioning method of beam lock losing of Beidou navigation satellite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105572708A true CN105572708A (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510986938.XA Pending CN105572708A (en) | 2015-12-26 | 2015-12-26 | Rapid positioning method of beam lock losing of Beidou navigation satellite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350637A (en) * | 2018-12-20 | 2020-06-30 | 北京金风科创风电设备有限公司 | Method and device for processing satellite course data |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424731A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院微电子研究所 | Rapidly recapturing and positioning method under receiver signal deletion condition of global positioning system |
| CN101551429A (en) * | 2009-03-23 | 2009-10-07 | 中国电子科技集团公司第五十四研究所 | Method for testing command function of Beidou-1 command type subscriber machine |
| CN101672909A (en) * | 2009-09-24 | 2010-03-17 | 安凯(广州)微电子技术有限公司 | GPS fast relocation method |
| CN103675871A (en) * | 2013-12-06 | 2014-03-26 | 东莞市泰斗微电子科技有限公司 | Satellite positioning method, module and terminal based on RNSS |
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2015
- 2015-12-26 CN CN201510986938.XA patent/CN105572708A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424731A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院微电子研究所 | Rapidly recapturing and positioning method under receiver signal deletion condition of global positioning system |
| CN101551429A (en) * | 2009-03-23 | 2009-10-07 | 中国电子科技集团公司第五十四研究所 | Method for testing command function of Beidou-1 command type subscriber machine |
| CN101672909A (en) * | 2009-09-24 | 2010-03-17 | 安凯(广州)微电子技术有限公司 | GPS fast relocation method |
| CN103675871A (en) * | 2013-12-06 | 2014-03-26 | 东莞市泰斗微电子科技有限公司 | Satellite positioning method, module and terminal based on RNSS |
Non-Patent Citations (2)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350637A (en) * | 2018-12-20 | 2020-06-30 | 北京金风科创风电设备有限公司 | Method and device for processing satellite course data |
| CN111350637B (en) * | 2018-12-20 | 2023-11-17 | 北京金风科创风电设备有限公司 | Satellite course data processing method and device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |
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