CN101645916B - Method for processing GNSS base band with communication protocol stack - Google Patents

Method for processing GNSS base band with communication protocol stack Download PDF

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Publication number
CN101645916B
CN101645916B CN2009100135347A CN200910013534A CN101645916B CN 101645916 B CN101645916 B CN 101645916B CN 2009100135347 A CN2009100135347 A CN 2009100135347A CN 200910013534 A CN200910013534 A CN 200910013534A CN 101645916 B CN101645916 B CN 101645916B
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module
gnss
data
software module
carry out
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CN101645916A (en
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张淑芳
胡青
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Dalian Maritime University
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Abstract

The invention relates to the field of positioning navigation and belongs to the field of the cross application of satellite positioning, communication and integrated circuit technology. Various remote moving or fixed position real-time acquiring technologies are achieved by integrating a GNSS receiver module, a network communication module, a control module, and the like together so as to realize the remote transmission of position data, and the method has complicated system structure. The invention provides a method for processing a GNSS base band with a communication protocol stack. The method is applied by a GNSS processor chip module, an external GNSS lower frequency conversion module, a remote network connecting module and an external control parameter configuring module to carry out GNSS satellite positioning calculation and directly transmits acquired position data to the remote destination by the communication protocol stack.

Description

GNSS baseband processing method with communication protocol stack
Technical field
The invention belongs to positioning and navigation field, relate to the cross-application subject of satellite fix, communication and integrated circuit technique, particularly a kind of GNSS baseband processing method with communication protocol stack.
Background technology
Development along with information technology; The combination of the GNSS satellite positioning tech and the network communications technology is more and more tightr; Various remote Mobile or fixed position obtain Technology Need in real time the position data that the GNSS receiver obtains are real-time transmitted to the destination through wireless or wire communication mode; For satisfying the demand, need GNSS receiver module, network communication module and control module etc. be integrated usually, to realize the remote transmission of position data; The disadvantage of these class methods is that system configuration is complicated, and price is also relatively more expensive.
Summary of the invention
The purpose of this invention is to provide a kind of GNSS baseband processing method, carry out the GNSS satellite fix and resolve, and the position data that obtains is directly sent to long-range destination through communication protocol stack with communication protocol stack.
Technical scheme of the present invention is: the GNSS baseband processing method with communication protocol stack; It is through GNSS BBP system implementation, and this GNSS BBP system comprises GNSS processor chips module 1, outside GNSS down conversion module 2, telecommunication network link block 3 and external control parameter configuration module 4.Wherein, BBP chip module 1 comprises GNSS multichannel correlator block 5, data and program storage module 6 and embedded MCU processor 7.The logic software program module that the program storage block stored of data and program storage module 6 is made up of main control software module 8, GNSS positioning calculation software module 9, data storage management software module 10, communication protocol stack software module 11 and control configuration parameter software module 12.GNSS multichannel correlator block 5 is obtained GNSS if sampling data from outside GNSS down conversion module 2, and to its carry out carrier wave relevant with the sign indicating number related operation after submit to embedded MCU processor 7.The logic software program module that embedded MCU processor 7 is carried out data and program storage module 6 is resolved and is transmitted with the realization position data; Treatment step is: (a), BBP chip module 1 starts or judge that the control configuration parameter upgrades after, main control software module 8 utilizes data storage management software module 10 from data and program storage module 6, directly to read the control configuration parameter; (b), GNSS positioning calculation software module 9 obtains to carry out the GNSS positioning calculation, the position data after main control software module 8 obtains to resolve after the relevant and sign indicating number measurement of correlation data of carrier wave from GNSS multichannel correlator block 5; (c), main control software module 8 judges whether that according to the control configuration parameter that reads needs carry out the remote transmission of position data; (d), carry out remote transmission, then judge whether to carry out point-to-point PPP and connect, carry out PPP like need and connect, main control software module 8 reads PPP and connects the control configuration parameter, carries out carrying out long-range tcp/ip communication again after PPP connects and connects like need; Do not connect if do not carry out PPP, then directly carry out long-range tcp/ip communication and connect, described PPP connects and is connected with long-range tcp/ip communication is to utilize communication protocol stack software module 11 to be connected with long-range destination; (e), the position data packing of telecommunication network link block 3 after will resolving carry out remote transmission, transmit as not needing remote transmission then directly to carry out this locality; (f), after the position data output, judge whether the control configuration parameter upgrades, if the control configuration parameter has renewal, then carries out again from step (a), otherwise circulation execution in step (e).
The control configuration parameter that main control software module 8 is obtained; Be to obtain from the Control Parameter configuration module 4 of outside through the mode of real-time interrupt, and it be stored in the data memory module of data and program storage module 6 through data storage management software module 10 by control configuration parameter software module 12.
GNSS multichannel correlator block 5 comprises 12 channel carrier phase correlator and code correlators, is present in the baseband processing chip module 1 with the mode of hardware logic electric circuit.
The content of control configuration parameter comprises: data output connected mode; Data output format; The data output frequency; Username and password, authentication mode that PPP connects; Target ip address and link slogan that TCP/IP connects.
The invention has the beneficial effects as follows: employing the present invention can directly carry out the remote transmission of location data and obtain under the condition that does not need external piloting control module and control module.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Fig. 1 is a system module structure chart of the present invention;
Fig. 2 is a logic software program module structure chart of the present invention;
Fig. 3 is the flow chart of internal logic software program of the present invention.
Embodiment
As shown in Figure 1, the present invention is through GNSS BBP system implementation, and this system comprises GNSS processor chips module 1, outside GNSS down conversion module 2, telecommunication network link block 3 and external control parameter configuration module 4.Wherein, GNSS processor chips module 1 comprises GNSS multichannel correlator block 5, data and program storage module 6 and embedded MCU processor 7.GNSS multichannel correlator block 5 comprises 12 channel carrier phase correlator and code correlators, is present in the baseband processing chip module 1 with the mode of hardware logic electric circuit.The logic software program module that the program storage block stored of data and program storage module 6 is made up of main control software module 8, GNSS positioning calculation software module 9, data storage management software module 10, communication protocol stack software module 11 and control configuration parameter software module 12, main control software module 8 are responsible for coordinating the tissue and the execution of GNSS positioning calculation software module 9, data storage management software module 10, communication protocol stack software module 11 and control configuration parameter software module 12.GNSS multichannel correlator block 5 is obtained GNSS if sampling data from outside GNSS down conversion module 2, and to its carry out carrier wave relevant with the sign indicating number related operation after submit to embedded MCU processor 7.The logic software program module that embedded MCU processor 7 is carried out data and program storage module 6 is resolved and is transmitted with the realization position data; Treatment step is: (a), BBP chip module 1 starts or judge that the control configuration parameter upgrades after, main control software module 8 utilizes data storage management software module 10 from data and program storage module 6, directly to read the control configuration parameter; (b), GNSS positioning calculation software module 9 obtains to carry out the GNSS positioning calculation, the position data after main control software module 8 obtains to resolve after the relevant and sign indicating number measurement of correlation data of carrier wave from GNSS multichannel correlator block 5; (c), main control software module 8 judges whether that according to the control configuration parameter that reads needs carry out the remote transmission of position data; (d), carry out remote transmission, then judge whether to carry out point-to-point PPP and connect, carry out PPP like need and connect, main control software module 8 reads PPP and connects the control configuration parameter, carries out carrying out long-range tcp/ip communication again after PPP connects and connects like need; Do not connect if do not carry out PPP, then directly carry out long-range tcp/ip communication and connect, described PPP connects and is connected with long-range tcp/ip communication is to utilize communication protocol stack software module 11 to be connected with long-range destination; (e), the position data packing of telecommunication network link block 3 after will resolving carry out remote transmission, transmit as not needing remote transmission then directly to carry out this locality; (f), after the position data output, judge whether the control configuration parameter upgrades, if the control configuration parameter has renewal, then carries out again from step (a), otherwise circulation execution in step (e).
In this flow process; The control configuration parameter that main control software module 8 is obtained; Be the director data that control configuration parameter software module 12 is obtained from external control parameter configuration module 4 through the mode of real-time interrupt, data storage management software module 10 is stored in this director data in data and the program storage module 6.
The content of control configuration parameter comprises: (1), data output connected mode (comprise three kinds: long-range PPP connects, long-range TCP/IP connects and local directly output); (2), data output format (self-defining data, NMEA-0183 data); (3), the data output frequency (with the time interval ' second ' be unit); (4), when the needs remote data transmission, also comprise username and password, authentication mode that remote transmission parameter: PPP connects, target ip address and link slogan that TCP/IP connects.More than the command adapted thereto of various control configuration parameters the contents are as follows:
(1) data output connected mode control:
Control Parameter configuration module 4 sends Data Transmission Controlling and instructs to GNSS processor chips module 1, and command content is distinguished as follows:
$$0001*#---local data transfer;
$$0002*#---long-range PPP connects transfer of data;
$$0003*#---long-range TCP/IP transfer of data.
GNSS process chip module 1 correspondence is replied instruction as follows:
$$1001*#---local data transfer is replied;
$$1002*#---long-range PPP connects transfer of data and replys;
$$1003*#---long-range TCP/IP transfer of data is replied.
(2) data output format control:
It is following that Control Parameter configuration module 4 sends to the instruction of GNSS processor chips module 1:
$$0101GGA/RMC/GSV/GLL/VTG/GSA*#---NMEA0183 Data Transmission Controlling instruction, optional wherein a kind of, when many statements of needs, between separate with '/';
$$0102NAV/MEM/SAT*#---self-defining data transmission control model, NAV mainly comprises the customer location relevant information, comprises the time, longitude, latitude, highly, speed, course, DOP value etc.; MEM is a metrical information, comprises satellite X, Y, Z days body agreement coordinate figure, pseudorange, Doppler frequency shift, receiver time error etc.; SAT is the satellite relevant information, comprises elevation angle, azimuth, signal to noise ratio of satellite etc.
1 corresponding the replying of GNSS processor chips module instructed as follows:
$$1101GGA/RMC/GSV/GLL/VTG/GSA*#---the NMEA0183 Data Transmission Controlling is replied instruction, explains same input instruction;
$$1102NAV/MEM/SAT*#---self-defining data transmission control model is replied instruction, explains same input instruction.
(3) data output frequency control:
It is following that Control Parameter configuration module 4 sends to the instruction of GNSS processor chips module 1:
$$0201XXX.YY*#---XXX.YY representes the position data transmission intercal, and unit is ' second ', and span is 0.01~999.99.
1 corresponding the replying of GNSS process chip module instructed as follows:
$$1201XXX.YY*#---instruction is replied in output frequency control.
(4) remote transmission parameter control command:
It is following that Control Parameter configuration module 4 sends to the instruction of GNSS processor chips module 1:
$$0301XX ... XX/YY ... YY*#---PPP connects usemame/password instruction is set, wherein, and ' XX ... XX ' expression PPP connects authentication username, random length, ASCII character; ' YY ... YY ' expression PPP connects authentication password, random length, ASCII character;
$$0302XXXXXX/YYYY*#---TCP/IP link address and port numbers are provided with instruction, and wherein, ' XXXXXX ' is 6 byte binary machine code IPV6 addresses, and when the address was IPV4, preceding two bytes were defaulted as 0x00; ' YYYY ' is 4 byte binary system port numbers.
1 corresponding the replying of GNSS processor chips module instructed as follows:
$$1301XX ... XX/YY ... YY*#---PPP connects the usemame/password setting and replys instruction;
Instruction is replied in $$1302XXXXXX/YYYY*#---TCP/IP link address and port numbers setting.
During long-range connection, reply data is as follows:
The PPP connection procedure:
Send:
7E?FF?7D?23?C0?21?7D?21?7D?21?7D?20?7D?2A?7D?22?7D?26?7D?20?7D?2A?7D?207D?20?22?7D?28?7E
7E?FF?7D?23?C0?21?7D?21?7D?22?7D?20?7D?2A?7D?22?7D?26?7D?20?7D?2A?7D?207D?20?25?DE?7E
7E?FF?7D?23?C0?21?7D?24?7D?21?7D?20?7D?28?7D?21?7D?24?7D?25?DC?30?56?7E7E?FF?7D?23?C0?21?7D?22?7D?22?7D?20?7D?32?7D?22?7D?26?7D?20?7D?20?7D?207D?20?7D?27?7D?22?7D?28?7D?22?7D?23?7D?24?C0?23?CD?36?7E
Reply:
7E?FF?7D?23?C0?21?7D?21?7D?21?7D?20?7D?36?7D?21?7D?24?7D?25?DC?7D?22?7D26?7D?20?7D?20?7D?20?7D?20?7D?27?7D?22?7D?28?7D?22?7D?23?7D?24?C0?23?26B4?7E
7E?FF?7D?23?C0?21?7D?22?7D?21?7D?20?7D?2A?7D?22?7D?26?7D?20?7D?2A?7D?207D?20?4B?7C?7E
7E?FF?7D?23?C0?21?7D?22?7D?22?7D?20?7D?2A?7D?22?7D?26?7D?20?7D?2A?7D?207D?20?4C?AA?7E
7E?FF?7D?23?C0?21?7D?21?7D?21?7D?20?7D?36?7D?21?7D?24?7D?25?DC?7D?22?7D26?7D?20?7D?20?7D?20?7D?20?7D?27?7D?22?7D?28?7D?22?7D?23?7D?24?C0?23?26B4?7E
7E?FF?7D?23?C0?21?7D?21?7D?22?7D?20?7D?32?7D?22?7D?26?7D?20?7D?20?7D?207D?20?7D?27?7D?22?7D?28?7D?22?7D?23?7D?24?C0?23?F5?37?7E
Send:
7E?FF?7D?23?C0?23?7D?21?7D?23?7D?20?7D?24?E1?7D?36?7E
Reply:
7E?FF?7D?23?C0?23?7D?22?7D?23?7D?20?7D?2D?7D?28?57?65?6C?63?6F?6D?65?21BF?5D?7E
The TCP/IP connection procedure is following:
Send:
7E?FF?7D?23?80?21?7D?21?7D?24?7D?20?7D?2A?7D?23?7D?26?7D?20?7D?20?7D?207D?20?7D?2B?5A?7E
7E?FF?7D?23?80?21?7D?22?7D?21?7D?20?7D?2A?7D?23?7D?26?C0?A8?6F?6F?DA?D37E
7E?FF?7D?23?80?21?7D?21?7D?25?7D?20?7D?2A?7D?23?7D?26?7D?20?7D?20?7D?207D?20?F6?7D?37?7E
7E?FF?7D?23?80?21?7D?21?7D?25?7D?20?7D?2A?7D?23?7D?26?7D?2A?30?22?52?E22C?7E
Reply:
7E?FF?7D?23?80?21?7D?21?7D?21?7D?20?7D?2A?7D?23?7D?26?C0?A8?6F?6F?B3?A77E
7E?FF?7D?23?80?21?7D?23?7D?24?7D?20?7D?2A?7D?23?7D?26?7D?2A?30?22?52?5139?7E
7E?FF?7D?23?80?21?7D?23?7D?25?7D?20?7D?2A?7D?23?7D?26?7D?2A?30?22?52?AC74?7E
7E?FF?7D?23?80?21?7D?22?7D?25?7D?20?7D?2A?7D?23?7D?26?7D?2A?30?22?52?8B58?7E
Send:
7E?FF?03?00?21?45?00?00?2F?00?00?00?00?FF?06?E6?2D?0A?30?20?53?DA?3D?D0DA?7D?33?88?7D?33?8A?00?7D?5D?33?00?00?00?00?00?60?02?02?00?67?AA?00?0002?04?01?00?03?03?00?0B?1B?7E
Reply:
7E?FF?03?00?21?45?00?00?2C?6A?3A?40?00?72?06?C8?F6?DA?3D?D0?DA?0A?30?2053?7D?33?8A?7D?33?88?65?2F?2B?A5?00?7D?5D?33?01?60?12?FF?FF?D7?66?00?0002?04?05?64?24?7A?7E
Send:
7E?FF?03?00?21?45?00?00?28?00?01?00?00?FF?06?E6?33?0A?30

Claims (4)

1. the GNSS baseband processing method that has communication protocol stack; It is characterized in that; This method is through GNSS BBP system implementation, and this GNSS BBP system comprises GNSS processor chips module (1), outside GNSS down conversion module (2), telecommunication network link block (3) and external control parameter configuration module (4); Wherein, BBP chip module (1) comprises GNSS multichannel correlator block (5), data and program storage module (6) and embedded MCU processor (7), the logic software program module that data and program storage module (6) stored are made up of main control software module (8), GNSS positioning calculation software module (9), data storage management software module (10), communication protocol stack software module (11) and control configuration parameter software module (12); GNSS multichannel correlator block (5) is obtained GNSS if sampling data from outside GNSS down conversion module (2); And to its carry out carrier wave relevant with the sign indicating number related operation after submit to embedded MCU processor (7); The logic software program module that embedded MCU processor (7) is carried out data and program storage module (6) is resolved and is transmitted with the realization position data; Treatment step is: (a), BBP chip module (1) starts or judge that the control configuration parameter upgrades after, main control software module (8) utilizes data storage management software module (10) from data and program storage module (6), directly to read the control configuration parameter; (b), GNSS positioning calculation software module (9) from GNSS multichannel correlator block (5), obtain carrier wave relevant with sign indicating number measurement of correlation data after carry out the GNSS positioning calculation, the position data after main control software module (8) obtains to resolve; (c), main control software module (8) judges whether that according to the control configuration parameter that reads needs carry out the remote transmission of position data; (d), carry out remote transmission, then judge whether to carry out point-to-point PPP and connect, carry out PPP like need and connect, main control software module (8) reads PPP and connects the control configuration parameter, carries out carrying out long-range tcp/ip communication again after PPP connects and connects like need; Do not connect if do not carry out PPP, then directly carry out long-range tcp/ip communication and connect, described PPP connects and is connected with long-range tcp/ip communication is to utilize communication protocol stack software module (11) to be connected with long-range destination; (e), the position data packing of telecommunication network link block (3) after will resolving carry out remote transmission, transmit as not needing remote transmission then directly to carry out this locality; (f), after the position data output, judge whether the control configuration parameter upgrades, if the control configuration parameter has renewal, then carries out again from step (a), otherwise circulation execution in step (e).
2. the GNSS baseband processing method with communication protocol stack according to claim 1; It is characterized in that; The control configuration parameter that described main control software module (8) is obtained; Be to obtain from external control parameter configuration module (4) through the mode of real-time interrupt, and it be stored in data and the program storage module (6) through data storage management software module (10) by control configuration parameter software module (12).
3. the GNSS baseband processing method with communication protocol stack according to claim 1; It is characterized in that; Described GNSS multichannel correlator block (5) comprises 12 channel carrier phase correlator and code correlators, is present in the baseband processing chip module (1) with the mode of hardware logic electric circuit.
4. the GNSS baseband processing method with communication protocol stack according to claim 1 and 2 is characterized in that the content of described control configuration parameter comprises: data output connected mode; Data output format; Username and password, authentication mode that data output frequency PPP connects; Target ip address and link slogan that TCP/IP connects.
CN2009100135347A 2009-08-25 2009-08-25 Method for processing GNSS base band with communication protocol stack Expired - Fee Related CN101645916B (en)

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