CN101588215B - Method for receiving and processing disaster prevention information - Google Patents
Method for receiving and processing disaster prevention information Download PDFInfo
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- CN101588215B CN101588215B CN2009100745282A CN200910074528A CN101588215B CN 101588215 B CN101588215 B CN 101588215B CN 2009100745282 A CN2009100745282 A CN 2009100745282A CN 200910074528 A CN200910074528 A CN 200910074528A CN 101588215 B CN101588215 B CN 101588215B
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Abstract
The present invention discloses a method for receiving and processing the disaster prevention information. A DAB-S RF module in the invention receives the RF signal which comes from the broadcasting satellite and is used for disaster prevention, processes the RF signal and outputs to a DAB-S baseband module. After processing, the RF signal is output to an audio-video module and the audio-video module outputs the audio-video. The GPS RF module receives the RF signal which comes from the navigation satellite, outputs to the GPS baseband module after processing, and outputs the PVT data after processing the navigation baseband signal according to the solving control data. The method for receiving and processing disaster prevention information according to the invention has the advantages of wide covering, in-time and accurate releasing of disaster prevention information without independence to the ground infrastructure, disaster area evasion navigation positioning, etc. The method for receiving and processing disaster prevention information according to the invention is especially suitable for receiving and processing the disaster prevention information.
Description
Technical field
The present invention relates to digital information transmission and satellite navigation positioning technical field, relate in particular to a kind of reception and processing method of disaster prevention information, it is specially adapted to do the reception and the processing of disaster prevention information.
Background technology
Along with expanding economy, human the dependence of fossil fuel is being caused the disaster of a global warming, climate warming for causing, and has threatened the biological sustainable development in the whole world by the people.In different regions, the world, a lot of meteorological disasters have appearred, caused the loss of mass casualties and property.
Defence and alleviate natural calamity, ensure that broad masses' security of the lives and property is the needs of building a harmonious society.China's meteorological cause development strategy proposes to set up great meteorological disaster early warning system and meteorological disaster early warning system in China and is the Chinese national economy construction target that escorts; The meteorological disaster early warning system is that meteorological disaster is predicted and before disaster is arrived, in time sent the early warning warning information; Make the people certain psychological preparation arranged, take action systematically hand in hand jointly, reduce to the influence of meteorological disaster and the extent of injury minimum the disaster thing.
Before meteorological disaster takes place, how to let people understand disaster information sooner, better, more easily, first-selected approach is based on the broadcasting-satellite system of DAB.Broadcasting-satellite system has broad covered area, characteristics such as easy are set up at the terminal; Should become the important technical that national Emergent Public Events early warning releases news; It can realize carrying out simultaneously the broadcasting of language and Word message; And have characteristics such as antinoise, anti-interference, anti-radio wave propagation decline, the very suitable issue that on a large scale, does not receive the meteorological disaster emergency advance warning information of weather condition and ground infrastructure restriction.
DAB is the third generation broadcasting after AM, FM case of conventional analog broadcast; Except having advantages such as digital data transmission antinoise, anti-interference, anti-radio wave propagation decline; And CD stereo-quality and digital information service can be provided; And do not receive the multi-path interference effect within the specific limits, with guarantee to fix, high-quality portable and portable terminal receives.
In order better to build the meteorological disaster early warning system; Ensure carrying out smoothly of the development of the national economy; Defence and alleviate natural calamity when great disaster takes place presses for reception and processing method based on the disaster prevention information of satellite digital audio radio (DAB-S) and satellite navigation and location system (GPS).
Summary of the invention
For solving the deficiency that exists in the prior art, the invention provides a kind of reception and processing method of disaster prevention information.It is also had, and broad covered area, terminal set up easy, conveniently moving, reception does not receive environmental influence, clear and accurate characteristics; Also can combine satellite navigation and location system; Digit broadcasting system reception disaster information and safe escape, rescue via satellite advances information such as route; And carry out navigator fix according to these information, make the masses rapid, safe withdraw the hazardous area, make rescue team also leave for the disaster area rapidly simultaneously and implement rescue.
Be to realize above-mentioned purpose, the reception of disaster prevention information of the present invention and processing method, under the support based on prevention information receiving processing system that presets and the primary control program that loads on this system, realize following disaster prevention information step and navigation step simultaneously:
The disaster prevention information step:
(1) satellite digital audio radio radio frequency (DAB-S RF) module receives the radiofrequency signal from the disaster prevention of broadcasting satellite, it is handled the back export to satellite digital audio radio (DAB-S) baseband module to the baseband signal of disaster prevention;
(2) baseband signal of satellite digital audio radio (DAB-S) baseband module receiving satellite word audio broadcasting radio frequency (DAB-S RF) module output; And baseband signal carried out the I/Q conversion; Obtain the two-way orthogonal signalling, this signal is sent into the OFDM base band demodulator and is carried out base band demodulating after passing through channel synchronization and channel equalization; Through demodulation multiplexer audio-video signal is sent into the channel decoder decoding then; Then carry out source coding, audio frequency and video are comprehensive, export to the audio frequency and video module to the digital audio/video data of disaster prevention after the back is handled in the D/A reduction, the audio frequency and video module is carried out audio frequency and video and is exported;
Navigation step:
(1) satellite navigation and location system radio frequency (GPS RF) module receives the radiofrequency signal from navigation satellite, it is handled the back export to satellite navigation and location system (GPS) baseband module to baseband signal;
(2) satellite navigation and location system (GPS) baseband module receives the baseband signal of satellite navigation and location system radio frequency (GPS RF) module output; To this signal catch, tracking, the despreading of PRN sign indicating number, carrier wave demodulation; And extract after the original observed quantity output text and observed quantity data to micro-control unit (MCU) control module;
It is characterized in that: navigation step (2) also comprises following navigation step afterwards,
(3) satellite navigation and location system (GPS) baseband module sends navigation data to micro-control unit (MCU) control module, to be directed against the data processing that navigator fix is used;
(4) satellite digital audio radio (DAB-S) baseband module to the baseband signal that receives decode, after the decryption processing resolve control data, the Navigation Control data output to memory module;
(5) micro-control unit (MCU) control module is controlled satellite navigation and location system (GPS) baseband module according to the control data in the memory module, in time revises various errors, output in real time, Position, Velocity and Time (PVT) data accurately.
Further improvement of the present invention also comprises step (6), embeds navigate application in the memory module, and under the control of micro-control unit (MCU) control module, receiving position, speed and time (PVT) data are carried out navigator fix.
Further improvement of the present invention; Also comprise step (7); The Navigation Control data of memory module receiving satellite word audio broadcasting (DAB-S) baseband module output; Micro-control unit (MCU) control module is carried out disaster region and is avoided navigator fix according to Position, Velocity and Time (PVT) data of Navigation Control data and reception.
Adopt the present technique scheme, its effect is following:
1, the present invention adopts the DAB-S technology to realize the reception and the processing of disaster prevention information; Make the reception of broadcast message of disaster prevention have antinoise, the decline of anti-interference, anti-radio wave propagation, be fit to advantage such as high-speed mobile reception, make the disaster prevention broadcast message in time, accurately issue.
2, the present invention adopts the DAB-S technology to realize the reception and the processing of disaster prevention information; Make the reception of broadcast message of disaster prevention have the advantages such as destruction that region broad covered area, infrastructure are not vulnerable to disaster; When even the big disaster that is damaged fully in ground infrastructure takes place, also can be in time, accurately disaster prevention information is issued.
3, the present invention adopts the GPS technology to realize the reception and the processing of disaster prevention information, also has the satellite navigation positioning function.
4, the present invention combines the GPS technology to realize the reception and the processing of disaster prevention information, can resolution error be revised according to the control data of broadcasting satellite transmission, and exact solution is calculated locating information.
5, the present invention combines the GPS technology to realize the reception and the processing of disaster prevention information, can carry out disaster region and avoid navigator fix according to the Navigation Control data of broadcasting satellite transmission.Make the victims of the disaster can be safely, in time withdraw; The disaster area rescue also can access timely expansion.
Description of drawings
Fig. 1 is a theory diagram of the present invention;
Fig. 2 is the fundamental diagram of the embodiment of the invention.
Embodiment
The reception of disaster prevention information of the present invention and processing method; At first preset the receiving processing system of disaster prevention information; Know by shown in Figure 1, comprise DAB-S RF module 100, DAB-S baseband module 101, GPS RF module 200, GPS baseband module 201, MCU control module 300, audio frequency and video module 400, LocalBUS bus 500, man-machine interface 600, memory module 700; By shown in Figure 2, in the course of the work, loading power module 800, input 801, display terminal, display terminal comprises display screen 802, loud speaker 803.
Wherein, DAB-S RF module adopts commercial DAB-S RF chip, DAB-S baseband portion to adopt FPGA to realize, embeds DAB-S Base-Band Processing program among the FPGA; The GPS RF of the utility model disaster prevention multi-functional terminal end and GPS baseband portion adopt the SiRFstar III chip of SiRF company to realize; The MCU control module adopts ARM9TDMI chip, audio frequency and video module to adopt FPGA to realize, embeds the audio/video decoding handling procedure among the FPGA, and display screen, loud speaker, memory module, man-machine interface, power module adopt general commercial product to realize.
In conjunction with Fig. 1, shown in Figure 2ly know that the DAB-S antenna links to each other with DAB-S RF module, DAB-S RF module links to each other with the DAB-S baseband module, the DAB-S baseband module links to each other with the audio frequency and video module, the audio frequency and video module links to each other with display screen, loud speaker.MCU control module, DAB-S RF module, DAB-S baseband module, man-machine interface, memory module, audio frequency and video module link to each other with the LocalBUS bus respectively, and the MCU control module is controlled DAB-S RF module, DAB-S baseband module, man-machine interface, memory module, audio frequency and video module through the LocalBUS bus.
DAB-S RF module 100 goes out end 2 pin and goes into to hold 1 pin to be connected with DAB-S baseband module 101; DAB-S baseband module 101 goes out to hold 2 pin and audio frequency and video module 400 to go into to hold 1 pin to be connected, and 300 discrepancy of MCU control module hold 1 pin, 100 discrepancy of DAB-S RF module to hold 3 pin, 101 discrepancy of DAB-S baseband module to hold 3 pin, man-machine interface 600 discrepancy to hold 1 pin, memory module 700 discrepancy to hold 1 pin, 400 discrepancy of audio frequency and video module to hold 2 pin to be connected with LocalBUS bus 500 respectively.
Based on the receiving processing system of this disaster prevention information and load under the support of primary control program of this system, the reception and the processing method of disaster prevention information of the present invention comprise the steps:
1. DAB-S RF module receives the radiofrequency signal from the disaster prevention of broadcasting satellite through the DAB-S antenna, after it is carried out LNA, down-conversion, AD conversion etc. and handles, exports to the DAB-S baseband module to the baseband signal of disaster prevention;
2. the DAB-S baseband module carries out the I/Q conversion to digital signal; Obtain the two-way orthogonal signalling; After this signal passes through channel synchronization and channel equalization; Send into the OFDM base band demodulator and carry out base band demodulating, through demodulation multiplexer audio-video signal is sent into channel decoder decoding then, then carry out source coding, audio frequency and video are comprehensive;
3. the analog audio-video of disaster prevention outputs to display screen, loud speaker carries out video and shows and voice playing after D/A is reduced into.And, then send into the data service processing of circuit from the data service that demodulation multiplexer comes out, accomplish the decoding and the demonstration of data service.
The reception of disaster prevention information of the present invention links to each other with the GPS baseband module with GPS RF module in handling; The GPS baseband module links to each other with the audio frequency and video module; GPS RF module, GPS baseband module link to each other with the LocalBUS bus respectively, and the MCU control module is controlled GPS RF module, GPS baseband module through the LocalBUS bus.It comprises step:
1. GPS RF module receives the radiofrequency signal from the GPS navigation satellite through gps antenna; To radiofrequency signal amplify, down-conversion, filtering and AD conversion; Obtain being fit to the frequency of Digital Signal Processing and the digital signal in the level range, export to the GPS baseband module to digital signal then;
2. the GPS baseband module to digital signal catch, tracking, the despreading of PRN sign indicating number, carrier wave demodulation; Accomplish the extraction of original observed quantity simultaneously; Comprise visible satellite signal capture and the real-time parallel multi channel signals processing of following the tracks of under the mode of operation; Separate the satellite-signal of each navigation system of identification from multi-address signal, to the despreading of being correlated with through the signal of PRN sign indicating number spread spectrum; Demodulation carrier wave on the basis that obtains despreading gain raising signal to noise ratio; Eliminate the influence of frequency shift (FS); Recover baseband signal; Constantly pairing sign indicating number state epoch, carrier wave Doppler and the phase state of relevant despreading, demodulation process are formed original observed quantity, send the MCU control module to, with the data processing that be directed against application such as navigator fix with resolve with navigation data.
3. the text sent here based on the GPS baseband module of MCU control module and observed quantity data are carried out navigator fix and are resolved and obtain PVT and other information to satisfy the requirement of various application; Be responsible for the operation control of whole system simultaneously; The operation of operating system and application software, hardware controls, I/O communication etc.
4. the DAB-S baseband module decode, processing such as deciphering back resolve control data, the Navigation Control data output to memory module; The MCU control module is controlled the GPS baseband module according to control data; In time revise various errors, output in real time, PVT data accurately.
5. embed navigate application in the memory module, under the control of MCU control module, receive the PVT data and carry out navigator fix.The MCU control module also can be carried out disaster region and avoid navigator fix according to the PVT data of Navigation Control data and reception.
Claims (3)
1. the reception of a disaster prevention information and processing method, under the support of this method based on prevention information receiving processing system that presets and the primary control program that loads on this system, realize following disaster prevention information step and navigation step simultaneously:
The disaster prevention information step:
(1) satellite digital audio radio radio frequency (DAB-S RF) module receives the radiofrequency signal from the disaster prevention of broadcasting satellite, it is handled the back export to satellite digital audio radio (DAB-S) baseband module to the baseband signal of disaster prevention;
(2) baseband signal of satellite digital audio radio (DAB-S) baseband module receiving satellite word audio broadcasting radio frequency (DAB-S RF) module output; And baseband signal carried out the I/Q conversion; Obtain the two-way orthogonal signalling, this signal is sent into the OFDM base band demodulator and is carried out base band demodulating after passing through channel synchronization and channel equalization; Through demodulation multiplexer audio-video signal is sent into the channel decoder decoding then; Then carry out source coding, audio frequency and video are comprehensive, export to the audio frequency and video module to the digital audio/video data of disaster prevention after the back is handled in the D/A reduction, the audio frequency and video module is carried out audio frequency and video and is exported;
Navigation step:
(1) satellite navigation and location system radio frequency (GPS RF) module receives the radiofrequency signal from navigation satellite, it is handled the back export to satellite navigation and location system (GPS) baseband module to baseband signal;
(2) satellite navigation and location system (GPS) baseband module receives the baseband signal of satellite navigation and location system radio frequency (GPS RF) module output; To this signal catch, tracking, the despreading of PRN sign indicating number, carrier wave demodulation; And extract after the original observed quantity output text and observed quantity data to micro-control unit (MCU) control module;
It is characterized in that: navigation step (2) also comprises following navigation step afterwards,
(3) satellite navigation and location system (GPS) baseband module sends navigation data to micro-control unit (MCU) control module, to be directed against the data processing that navigator fix is used;
(4) satellite digital audio radio (DAB-S) baseband module to the baseband signal that receives decode, after the decryption processing resolve control data, the Navigation Control data output to memory module;
(5) micro-control unit (MCU) control module is controlled satellite navigation and location system (GPS) baseband module according to the control data in the memory module, in time revises various errors, output in real time, Position, Velocity and Time (PVT) data accurately.
2. the reception of disaster prevention information according to claim 1 and processing method; It is characterized in that: also comprise step (6); Embed navigate application in the memory module; Under the control of micro-control unit (MCU) control module, receiving position, speed and time (PVT) data are carried out navigator fix.
3. the reception of disaster prevention information according to claim 2 and processing method; It is characterized in that: also comprise step (7); The Navigation Control data of memory module receiving satellite word audio broadcasting (DAB-S) baseband module output; Micro-control unit (MCU) control module is carried out disaster region and is avoided navigator fix according to Position, Velocity and Time (PVT) data of Navigation Control data and reception.
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| CN101826926B (en) * | 2010-03-30 | 2011-08-03 | 南京信息工程大学 | Method for automatically acquiring and identifying address code of DAB disaster information warning receiver |
| KR20160012576A (en) * | 2014-07-24 | 2016-02-03 | 삼성전자주식회사 | Operating Method and Device for disaster information |
| CN112235715A (en) * | 2020-10-15 | 2021-01-15 | 中国电子科技集团公司第五十四研究所 | Real-time route planning multifunctional terminal in unknown environment |
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| CN1327657A (en) * | 1998-12-02 | 2001-12-19 | 瑞士电信流动电话公司 | Mobile apparatus and method for receiving and filtering from program-accumpanying data on the basis of a defined position |
| WO2007083899A2 (en) * | 2006-01-19 | 2007-07-26 | Lg Electronics Inc. | Method and apparatus for providing congestion and travel time information to users |
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Patent Citations (2)
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|---|---|---|---|---|
| CN1327657A (en) * | 1998-12-02 | 2001-12-19 | 瑞士电信流动电话公司 | Mobile apparatus and method for receiving and filtering from program-accumpanying data on the basis of a defined position |
| WO2007083899A2 (en) * | 2006-01-19 | 2007-07-26 | Lg Electronics Inc. | Method and apparatus for providing congestion and travel time information to users |
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| 张敏.用地面站修正GPS导航误差.《国际太空》.1992,12-13. * |
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Application publication date: 20091125 Assignee: CETC SATELLITE NAVIGATION OPERATION SERVICE CO., LTD. Assignor: No.54 Inst., China Electronic Sci. & Tech. Group Co. Contract record no.: 2013130000008 Denomination of invention: Method for receiving and processing disaster prevention information Granted publication date: 20120215 License type: Exclusive License Record date: 20130108 |
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