CN105629264A - Navigation data calibration method and device for GPS/Beidou navigation receiver - Google Patents
Navigation data calibration method and device for GPS/Beidou navigation receiver Download PDFInfo
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- CN105629264A CN105629264A CN201510999072.6A CN201510999072A CN105629264A CN 105629264 A CN105629264 A CN 105629264A CN 201510999072 A CN201510999072 A CN 201510999072A CN 105629264 A CN105629264 A CN 105629264A
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- 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
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- Radar, Positioning & Navigation (AREA)
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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention provides a navigation data calibration method for a GPS/Beidou navigation receiver. The method includes the steps of: performing one cyclic shift operation with the xor operation on original data; comparing an operation result with received calibration data; judging the received data accuracy according to a comparison result; and greatly reducing an operation load. The navigation data calibration method for the GPS/Beidou navigation receiver is suitable for both the GPS and a Beidou navigation system, does not need to perform de-interleaving operation on a word which is not the first in the Beidou navigation system, and improves the calibration efficiency. The invention also provides a navigation data calibration device corresponding to the navigation data calibration method.
Description
Technical field
The invention belongs to data verification field, especially a kind of navigation data verification method for GPS/ Beidou navigation satellite system receiver and device.
Background technology
The navigation data School Affairs GPS interface document of existing GPS navigation system is all by matrix-style, the navigation data of triones navigation system verifies on interface document with hardware implementing, and also need by hardware deinterleaving for non-first character to be two groups of numerals, and then verify by two groups or one group of hardware.
Existing verification mode computing amount is too big, and the non-first character of the Big Dipper also needs first to carry out deinterleaving computing, and verification efficiency is low.
Summary of the invention
Technical problem solved by the invention is to provide a kind of navigation data verification method for GPS/ Beidou navigation satellite system receiver, by raw data being carried out, a heave hand is different or the ring shift computing of computing, and compare the accuracy that verification judges raw data, greatly reduce computing amount, GPS and triones navigation system can be applicable to simultaneously, and deinterleaving computing is not needed for the non-first character in triones navigation system, it is to increase verification efficiency.
The technical solution realizing the object of the invention is:
A kind of navigation data verification method for GPS/ Beidou navigation satellite system receiver, by the raw data received being carried out, a heave hand is different or the ring shift computing of computing, operation result and the checking data received are compared, judges the accuracy of the raw data received according to comparative result.
Further, the navigation data verification method for GPS/ Beidou navigation satellite system receiver of the present invention, comprises the following steps:
Step 1: initialization system data, makes check code s=0, ring shift number i=1, receives checking data m and number of bits is the raw data of n, and wherein, m, n are positive integer;
Step 2: as i��n, forward step 3 to, as i > n, forwards step 4 to;
Step 3: orderWherein,Representing different or computing, described form calculates according to navigation data checking algorithm, makes again i=i+1, forwards step 2 to;
Step 4: compare check code s and checking data m, if s=m, then preserves the raw data received, if s �� m, then abandons the raw data received.
Further, the navigation data verification method for GPS/ Beidou navigation satellite system receiver of the present invention, the length of described data form is the number of bits of raw data, and width is the number of bits of checking data.
Further, the present invention proposes a kind of navigation data checking aparatus based on above-mentioned verification method, comprising:
Initialize module, for initialization system data, is specially: make check code s=0, ring shift number i=1, and reception checking data m and number of bits are the raw data of n, and wherein, m, n are positive integer;
Judge module, for judging the relation of i and n, as i��n, forward computing module to, as i > n, forward verification module to;
Computing module, for calculation check code s, is specially:
OrderWherein,Representing different or computing, form calculates according to navigation data checking algorithm, makes again i=i+1, forwards judgement module to;
Verification module, for comparing check code s and checking data m, if s=m, then preserves the raw data received, if s �� m, then abandons the raw data received.
Further, the present invention proposes a kind of GPS/ Beidou navigation satellite system receiver based on above-mentioned verification method, comprises aforesaid navigation data checking aparatus.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
As long as the method that 1 liner code can adopt the present invention verifies;
2, the method for the present invention both can realize with software, it is also possible to realizes with hardware;
3, the method computing amount of the present invention is little, verification efficiency height.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the present invention.
Embodiment
Being described below in detail embodiments of the present invention, the example of described enforcement mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish. It is exemplary below by the enforcement mode being described with reference to the drawings, only for explaining the present invention, and limitation of the present invention can not be interpreted as.
The present invention proposes a kind of navigation data verification method for GPS/ Beidou navigation satellite system receiver, by the raw data received being carried out, a heave hand is different or the ring shift computing of computing, operation result and the checking data received are compared, judges the accuracy of the raw data received.
Specifically comprise the following steps:
Step 1: initialization system data, makes check code s=0, ring shift number i=1, receives checking data m and number of bits is the raw data of n, and wherein, m, n are positive integer;
Step 2: as i��n, forward step 3 to, as i > n, forwards step 4 to;
Step 3: orderWhereinRepresenting different or computing, form calculates according to navigation data checking algorithm, and the length of form is the number of bits of raw data, and width is the number of bits of checking data, makes again i=i+1, forwards step 2 to;
Step 4: compare check code s and checking data m, if s=m, then preserves the raw data received, if s �� m, then abandons the raw data received.
In ring shift computing, the number of times of displacement equals the number of bits of raw data, and number of times that is different or computing equals the number that in raw data, bit number equals 1.
In addition, the present invention is on the basis of above-mentioned verification method, it is proposed that a kind of navigation data checking aparatus, comprises initialize module, judges module, computing module and verification module. Wherein, initialize module, for initialization system data, is specially: make check code s=0, ring shift number i=1, and reception checking data m and number of bits are the raw data of n, and wherein, m, n are positive integer; Judge module, for judging the relation of i and n, as i��n, forward computing module to, as i > n, forward verification module to; Computing module, for calculation check code s, is specially:
OrderWherein,Representing different or computing, form calculates according to navigation data checking algorithm, makes again i=i+1, forwards judgement module to; Verification module, for comparing check code s and checking data m, if s=m, then preserves the raw data received, if s �� m, then abandons the raw data received.
Further, the present invention is on the basis of above-mentioned verification method, it is proposed that a kind of GPS/ Beidou navigation satellite system receiver, is provided with foregoing navigation data checking aparatus in this navigation receiving apparatus.
The above is only the part enforcement mode of the present invention, it should be noted that for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvement, these improvement should be considered as protection scope of the present invention.
Claims (5)
1. the navigation data verification method for GPS/ Beidou navigation satellite system receiver, it is characterized in that, by the raw data received being carried out, a heave hand is different or the ring shift computing of computing, operation result and the checking data received are compared, judges the accuracy of the raw data received according to comparative result.
2. the navigation data verification method for GPS/ Beidou navigation satellite system receiver according to claim 1, it is characterised in that, comprise the following steps:
Step 1: initialization system data, makes check code s=0, ring shift number i=1, receives checking data m and number of bits is the raw data of n, and wherein, m, n are positive integer;
Step 2: as i��n, forward step 3 to, as i > n, forwards step 4 to;
Step 3:Wherein,Representing different or computing, described form calculates according to navigation data checking algorithm, makes again i=i+1, forwards step 2 to;
Step 4: compare check code s and checking data m, if s=m, then preserves the raw data received, if s �� m, then abandons the raw data received.
3. the navigation data verification method for GPS/ Beidou navigation satellite system receiver according to claim 2, it is characterised in that, the length of described data form is the number of bits of raw data, and width is the number of bits of checking data.
4. a navigation data checking aparatus, it is characterised in that, comprising:
Initialize module, for initialization system data, is specially: make check code s=0, ring shift number i=1, and reception checking data m and number of bits are the raw data of n, and wherein, m, n are positive integer;
Judge module, for judging the relation of i and n, as i��n, forward computing module to, as i > n, forward verification module to;
Computing module, for calculation check code s, is specially:
OrderWherein,Representing different or computing, form calculates according to navigation data checking algorithm, makes again i=i+1, forwards judgement module to;
Verification module, for comparing check code s and checking data m, if s=m, then preserves the raw data received, if s �� m, then abandons the raw data received.
5. a GPS/ Beidou navigation satellite system receiver, it is characterised in that, comprise navigation data checking aparatus according to claim 4.
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| CN201510999072.6A CN105629264B (en) | 2015-12-25 | 2015-12-25 | Navigation data method of calibration and device for GPS/ Beidou navigation satellite system receivers |
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| CN201510999072.6A CN105629264B (en) | 2015-12-25 | 2015-12-25 | Navigation data method of calibration and device for GPS/ Beidou navigation satellite system receivers |
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| CN101340193A (en) * | 2008-08-12 | 2009-01-07 | 普天信息技术研究院有限公司 | Constructing method, encoder and decoder of low density check code |
| US20100254492A1 (en) * | 2009-04-06 | 2010-10-07 | Mediatek Inc. | Data signal phase reversal correction method and system implementing the same |
| EP2690403A1 (en) * | 2012-07-25 | 2014-01-29 | Astrium GmbH | Apparatus for and method of verifying stored map data |
| CN103988094A (en) * | 2011-08-16 | 2014-08-13 | 欧洲太空署 | A navigation system using spreading codes based on pseudo-random noise sequences |
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2015
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| EP0280914A2 (en) * | 1987-03-06 | 1988-09-07 | Blaupunkt-Werke GmbH | Apparatus for data reception |
| US20040044477A1 (en) * | 2002-09-02 | 2004-03-04 | Jung Mun Ho | Method for correcting position error in navigation system |
| CN101340193A (en) * | 2008-08-12 | 2009-01-07 | 普天信息技术研究院有限公司 | Constructing method, encoder and decoder of low density check code |
| US20100254492A1 (en) * | 2009-04-06 | 2010-10-07 | Mediatek Inc. | Data signal phase reversal correction method and system implementing the same |
| CN103988094A (en) * | 2011-08-16 | 2014-08-13 | 欧洲太空署 | A navigation system using spreading codes based on pseudo-random noise sequences |
| EP2690403A1 (en) * | 2012-07-25 | 2014-01-29 | Astrium GmbH | Apparatus for and method of verifying stored map data |
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