CN110429969B - Real-time heaven-earth satellite signal acquisition and analysis system - Google Patents
Real-time heaven-earth satellite signal acquisition and analysis system Download PDFInfo
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- CN110429969B CN110429969B CN201910647654.6A CN201910647654A CN110429969B CN 110429969 B CN110429969 B CN 110429969B CN 201910647654 A CN201910647654 A CN 201910647654A CN 110429969 B CN110429969 B CN 110429969B
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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
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/26—Visual data mining; Browsing structured data
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18517—Transmission equipment in earth stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0435—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0478—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload applying multiple layers of encryption, e.g. nested tunnels or encrypting the content with a first key and then with at least a second key
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
- H04L67/5683—Storage of data provided by user terminals, i.e. reverse caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72406—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by software upgrading or downloading
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a real-time heaven-earth satellite signal acquisition and analysis system, which develops an automatic satellite signal detector based on an heaven-earth module and realizes the automatic acquisition and detection of information such as satellite signal coverage, satellite signal intensity, equipment power consumption and the like in the ocean work area of the science number; establishing an OTN data transmission system to realize the safe transmission of scientific number secret-related information and data; a land-based data receiving management software system is constructed, automatic storage and warehousing of information such as satellite signal quality, satellite signal strength and the like in a scientific number operation area are achieved, and visual display of related data is achieved by combining a GIS geographic information system.
Description
Technical Field
The invention belongs to the technical field of satellite communication, and relates to a real-time heaven-earth satellite signal acquisition and analysis system.
Background
Because the satellite communication system adopts the foreign iridium satellite system, the subsurface buoy observation data need to be forwarded to the domestic server after passing through the foreign iridium satellite server, and the process has potential risks in two aspects: (1) the real-time data of the deep sea submerged buoy in China are firstly transmitted to a foreign iridium satellite server, so that the risk of intercepting the data by the other party is increased; (2) forwarding to the domestic server by a foreign server increases the risk of data loss. In order to test technical indexes, overall performance and system reliability of the real-time communication subsurface buoy, a foreign iridium satellite system is temporarily used for data transmission at present, and the test sea area is located in an international sea area, and at the present stage, deep sea real-time data only serve scientific research and climate forecast, so that national safety is not involved. However, the real-time western space potential standard observation network aims at the application requirement of national security guarantee, under the condition, the real-time transmission of deep sea data can not depend on a foreign satellite communication system, otherwise, foreign adversarial force can steal or tamper the data at any time, the satellite transmission can be interrupted in case of emergency, the national security of China is seriously damaged, and therefore, the transmission safety, the autonomy and the controllability of the deep sea real-time data must be ensured. By combining the considerations, the following work is focused on safe and reliable data transmission, and the most intuitive solution is to directly transmit the data of the subsurface buoy observation network to a domestic server for storage by means of a domestic satellite communication system.
Disclosure of Invention
The invention aims to provide a real-time heaven-earth satellite signal acquisition and analysis system, which has the advantages that the scheme can realize 24-hour unattended operation of shipborne equipment, and data are transmitted back to a data center in real time within the communicable signal intensity of a domestic satellite; under the condition of poor signals, the beam signal strength of each longitude and latitude is automatically stored, the maximum storage time is 1 year, and the compensation transmission of stored data can be realized when satellite signals meet the requirements.
The technical scheme adopted by the invention comprises the following steps:
(1) a satellite signal automatic detector based on an skynet module is developed to realize automatic acquisition and detection of information such as the satellite signal coverage range, the satellite signal strength, the equipment power consumption and the like of the ocean operation of the scientific number;
(2) establishing an OTN data transmission system to realize the safe transmission of scientific number secret-related information and data;
(3) a land-based data receiving management software system is constructed, automatic storage and warehousing of information such as satellite signal quality, satellite signal strength and the like in a scientific number operation area are achieved, and visual display of related data is achieved by combining a GIS geographic information system.
Further, establishing an OTN data transmission system in the step (2) to realize the safe transmission of scientific number secret-related information and data; with on-board satellite signal detector access on-board wifi network to the signal detector is communication module with secret-related data with the help of domestic satellite communication system passback to land-based data center:
ship driving parameter return: including real-time longitude and latitude and speed information;
ship-borne scientific research instrument data return: the external communication interface of the shipborne scientific research instrument is butted through the RS232 and 485 communication interfaces reserved in the terminal equipment, so that the real-time return of the data of the scientific research instrument is realized, and the data analysis system of the original land-based laboratory can perform synchronous analysis on the data, so that the linkage effect of field sampling, field detection and synchronous decision making of land-based laboratory researchers is achieved;
scientific research personnel PC notebook data return: except for the specific program file sending function, the method is compatible with the conventional mail sending and receiving function;
scientific research personnel encrypt and return mobile phone APP data, wherein the APP is customized by the mobile phone and is connected with a specific land-based server to realize the encrypted return function of videos, pictures and characters in the mobile phone;
based on the limitation of bandwidth and communication cost of the current domestic satellite, a processing mechanism of compressing and encrypting original data is adopted, a lossless compression mode is adopted for data files, a lossy compression scheme is adopted for image videos and the like, transmission data are compressed to the maximum extent, and the bandwidth resources of the satellite network are fully utilized. The encryption algorithm adopts 3DES Triple DES, and the symmetric DES-based algorithm encrypts a block of data three times by three different keys, so that the strength is higher, and the security of the data is improved while the transmission efficiency of the satellite network is ensured.
Further, a land-based data receiving management software system is constructed in the step (3), automatic storage and storage of satellite signal quality and intensity information in a scientific number operation area are achieved, and visual display of related data is achieved by combining a GIS geographic information system;
the server dynamic data receiving module: the interactive function for realizing data encryption, decryption and transmission control is that the current domestic satellite is in a development stage, the initial signal can not realize the whole seamless coverage of the discipline number operation area, and a reliable communication mechanism must be established to ensure the integrity of data due to the limitation of the satellite communication bandwidth. The method comprises the following points:
a, dynamically controlling the size and the speed of a data transmission data packet according to the signal intensity of different areas;
b, a breakpoint continuous transmission mechanism is added at the service receiving end, and the flexible receiving and feedback functions of the data packet are realized by matching with the data caching function of the shipborne terminal equipment;
c, dynamic key distribution mechanism: the encryption key of the shipborne equipment can be periodically sent and synchronously changed according to the requirement so as to ensure the security of data;
server database dynamic storage module: various return data of 10 years can be stored;
according to the scheme, all the returned original data are backed up and stored in the server platform database, and the inquiry authority is flexibly distributed according to actual users of the actual data;
the field management module: the real-time coverage condition of each wave beam signal of the skynet satellite is monitored in real time by the domestic satellite transmission channel, such as the position, the speed and the like of a scientific investigation ship;
historical data query statistics module: the historical track playback of the survey ship is realized, the national satellite signal coverage condition at each time interval and position is inquired and counted, and data support is provided for the subsequent submerged standard real-time distribution of the national satellite channel; the inquiry function of the system flexibly inquires the coverage condition of the domestic satellite signal of each coordinate point in a certain time period according to the combined inquiry conditions of time, longitude and latitude, data transmission success rate and the like;
the data sharing module: the method provides the coverage condition analysis of the domestic satellites in different sea areas for the localization of the satellite channels of the ocean detection equipment of other scientific research institutions, and provides an effective analysis means for realizing the localization of the satellite channels in the whole industry.
Drawings
FIG. 1 is a ship-borne satellite signal detection data transmission system based on an aerospace satellite communication system;
fig. 2 is a data flow diagram.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The system of the invention, as shown in fig. 1, comprises:
(1) a satellite signal automatic detector based on an skynet module is developed to realize automatic acquisition and detection of information such as the satellite signal coverage range, the satellite signal strength, the equipment power consumption and the like of the ocean operation of the scientific number;
(2) establishing an OTN data transmission system to realize the safe transmission of scientific number secret-related information and data;
the shipborne satellite signal detector is connected to a shipborne wifi network, and the 'subject number' confidential data is transmitted back to the land-based data center by means of a domestic satellite communication system by taking the signal detector as a communication module. The data transmission system of the scheme can completely depend on a domestic satellite to realize the return function of the following data:
ship driving parameter return: including real-time longitude and latitude, speed and other information;
ship-borne scientific research instrument data return: the external communication interface of the shipborne scientific research instrument is butted through the RS232 and 485 communication interfaces reserved in the terminal equipment, so that the real-time return of the data of the scientific research instrument is realized, and the data analysis system of the original land-based laboratory can perform synchronous analysis on the data, so that the linkage effect of field sampling, field detection and synchronous decision making of land-based laboratory researchers is achieved;
scientific research personnel PC notebook data return: except for the specific program file sending function, the method is compatible with the conventional mail sending and receiving function;
and (4) encrypting and returning the mobile phone APP data of scientific research personnel, namely customizing the APP by the mobile phone, and connecting a specific land-based server to realize the encryption and returning functions of videos, pictures, characters and the like in the mobile phone.
Based on the limitation of bandwidth and communication cost of the current domestic satellite, a processing mechanism of compressing and encrypting original data is adopted, a lossless compression mode is adopted for data files, a lossy compression scheme is adopted for image videos and the like, transmission data are compressed to the maximum extent, and the bandwidth resources of the satellite network are fully utilized. The encryption algorithm adopts 3DES (triple DES), and the DES-based symmetric algorithm encrypts a block of data three times by using three different keys, so that the strength is higher, and the security of the data is improved while the transmission efficiency of a satellite network is ensured.
(3) A land-based data receiving management software system is constructed, automatic storage and warehousing of information such as satellite signal quality, satellite signal strength and the like in a scientific number operation area are realized, and visual display of related data is realized by combining a GIS geographic information system;
server dynamic data reception module: the interactive function for realizing data encryption, decryption and transmission control is that the current domestic satellite is in a development stage, signals at the initial stage cannot realize the whole seamless coverage of a scientific number operation area, and a reliable communication mechanism must be established due to the limitation of satellite communication bandwidth so as to ensure the integrity of data. The method comprises the following points:
a, dynamically controlling the size and the speed of a data transmission data packet according to the signal intensity of different areas;
b, a breakpoint continuous transmission mechanism is added at the service receiving end, and the flexible receiving and feedback functions of the data packet are realized by matching with the data caching function of the shipborne terminal equipment;
c dynamic key distribution mechanism: the encryption key of the shipborne device can be periodically sent and synchronously changed according to the requirement so as to ensure the safety of data.
Server database dynamic storage module: various return data of 10 years can be stored;
through various original data returned by the scheme, the database of the server platform is completely backed up and stored, and the inquiry authority is flexibly distributed according to actual users of actual data. The data flow is shown in fig. 2.
The field management module: the real-time coverage condition of each wave beam signal of the skynet satellite is monitored in real time by the domestic satellite transmission channel, such as the position, the speed and the like of a scientific investigation ship;
historical data query statistics module: the historical track playback of the survey ship is realized, the national satellite signal coverage condition at each time interval and position is inquired and counted, and data support is provided for the subsequent submerged standard real-time distribution of the national satellite channel; the inquiry function of the system can flexibly inquire the coverage condition of the domestic satellite signal of each coordinate point in a certain time period according to the combined inquiry conditions of time, longitude and latitude, data transmission success rate and the like.
The data sharing module: the method provides the coverage condition analysis of the domestic satellites in different sea areas for the localization of the satellite channels of the ocean detection equipment of other scientific research institutions, and provides an effective analysis means for realizing the localization of the satellite channels in the whole industry.
The data sharing function of the scheme can provide shipborne signal detection data mentioned in the scheme, and can also access domestic satellite signal detection data of other scientific research institutions through reserved interfaces, so that domestic satellite beam coverage condition charts of different sea areas are achieved, and reliable scientific basis is provided for subsequent domestic satellite channel ocean equipment arrangement.
Technical parameters of the shipborne terminal:
the heaven-through working frequency band:
and S wave band uplink: 1980MHz-2010MHz
And (3) S-band downlink: 2170MHz-2200MHz
Maximum transmission power: 10W
Working voltage: 8-36V, and typical working voltage of 12V
Standby power consumption: 100mw @12v
Transmission power consumption: 30w @12V
The satellite data service support of heaven-earth communication: 9.6Kbps-384Kbps
Working temperature: -40 ℃ to +55 DEG C
Storage temperature: -40 ℃ to +85 DEG C
High temperature and high relative humidity environment: (95 +/-3)% (≧ 40 ℃ C.)
Low temperature high relative humidity environment: (95 +/-3)% (. ltoreq.40 ℃ C.)
Structure size length by width by height: 320 x 200 x 50mm
Data storage: SD card
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (1)
1. Real-time sky leads to satellite signal acquisition analytic system, its characterized in that:
(1) developing a satellite signal automatic detector based on an skynet module to realize automatic acquisition and detection of satellite signal coverage, satellite signal intensity and equipment power consumption information of a scientific-number ocean operation sea area;
(2) establishing an OTN data transmission system to realize the safe transmission of scientific number secret-related information and data; with on-board satellite signal detector access on-board wifi network to the signal detector is communication module with secret-related data with the help of domestic satellite communication system passback to land-based data center:
returning ship driving parameters: including real-time longitude and latitude and speed information;
data passback of the shipborne scientific research instrument: the external communication interface of the shipborne scientific research instrument is butted through the RS232 and 485 communication interfaces reserved in the terminal equipment, so that the real-time return of the data of the scientific research instrument is realized, and the data analysis system of the original land-based laboratory can perform synchronous analysis on the data, so that the linkage effect of field sampling, field detection and synchronous decision making of land-based laboratory researchers is achieved;
returning data of a PC notebook computer of a scientific research staff: except for the specific program file sending function, the method is compatible with the conventional mail sending and receiving function;
carrying out encryption and feedback on mobile phone APP data by scientific research personnel, namely customizing the APP by the mobile phone and connecting a specific land-based server to realize the encryption and feedback functions of videos, pictures and characters in the mobile phone;
based on the limitation of bandwidth and communication cost of the current domestic satellite, a processing mechanism of firstly compressing and then encrypting original data is adopted, a lossless compression mode is adopted for data files, a lossy compression scheme is adopted for image videos, data are compressed and transmitted to the maximum extent, the bandwidth resources of the satellite network are fully utilized, a 3DES Triple DES is adopted as an encryption algorithm, three times of encryption is carried out on one piece of data by using three different keys based on a symmetrical DES algorithm, the strength is higher, and the security of the data is improved while the transmission efficiency of the satellite network is ensured;
(3) a land-based data receiving management software system is constructed, automatic storage and warehousing of satellite signal quality and intensity information in a scientific number operation area are realized, and visual display of related data is realized by combining a GIS geographic information system:
the server dynamic data receiving module: the interactive functions of data encryption, decryption and transmission control are realized;
the method comprises the following steps:
a, dynamically controlling the size and the speed of a data transmission data packet according to the signal intensity of different areas;
b, a breakpoint continuous transmission mechanism is added at the service receiving end, and the flexible receiving and feedback functions of the data packet are realized by matching with the data caching function of the shipborne terminal equipment;
c dynamic key distribution mechanism: the encryption key of the shipborne equipment can be periodically sent and synchronously changed according to the requirement so as to ensure the safety of data;
the server database dynamic storage module: storing various return data for 10 years;
according to the scheme, all the returned original data are backed up and stored in the server platform database, and the inquiry authority is flexibly distributed according to actual users of the actual data;
the field management module: the real-time coverage condition of each wave beam signal of the skynet satellite is monitored in real time by the position and the speed of the scientific investigation ship through a domestic satellite transmission channel;
a historical data query statistic module: the historical track playback of the survey ship is realized, the national satellite signal coverage condition at each time interval and position is inquired and counted, and data support is provided for the subsequent submerged standard real-time distribution of the national satellite channel; the inquiry function of the system flexibly inquires the coverage condition of the domestic satellite signal of each coordinate point in a certain time period according to the time, longitude and latitude and data transmission success rate combination inquiry condition;
a data sharing module: the method provides domestic satellite coverage condition analysis of different sea areas for the localization of satellite channels of ocean detection equipment of other scientific research institutions, and provides an effective analysis means for realizing the localization of satellite channels in the whole industry;
the real-time heaven-earth satellite signal acquisition and analysis system realizes 24-hour unattended operation of shipborne equipment, and data are transmitted back to the data center in real time within the communicable signal intensity of a domestic satellite; under the condition of poor signals, the beam signal strength of each longitude and latitude is automatically stored, the maximum storage time is 1 year, and the compensation transmission of stored data is realized when satellite signals meet requirements.
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| CN112367112A (en) * | 2020-10-29 | 2021-02-12 | 青岛海洋科学与技术国家实验室发展中心 | Deep sea subsurface buoy real-time data transmission system based on multimode satellite communication system |
| CN117579568B (en) * | 2024-01-17 | 2024-03-22 | 山东省国土测绘院 | Method and system for realizing network dynamic geographic information service |
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