CN116073884B - Ocean buoy communication system and method based on high-low orbit satellite fusion - Google Patents
Ocean buoy communication system and method based on high-low orbit satellite fusion Download PDFInfo
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- CN116073884B CN116073884B CN202211694524.6A CN202211694524A CN116073884B CN 116073884 B CN116073884 B CN 116073884B CN 202211694524 A CN202211694524 A CN 202211694524A CN 116073884 B CN116073884 B CN 116073884B
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- 230000006854 communication Effects 0.000 title claims abstract description 189
- 238000004891 communication Methods 0.000 title claims abstract description 187
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000004927 fusion Effects 0.000 title claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 239000000284 extract Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008054 signal transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
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Classifications
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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
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
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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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a marine buoy communication system and method based on high-low orbit satellite fusion. The ocean buoy communication system comprises an ocean buoy, wherein the ocean buoy is in communication connection with a low-orbit satellite through a low-orbit satellite antenna arranged on the ocean buoy, the low-orbit satellite is in communication connection with a low-orbit satellite gateway station, a low-orbit satellite measurement and control data center and an ocean observation big data platform in sequence, the ocean buoy is in communication connection with a high-orbit satellite through a high-orbit satellite antenna arranged on the ocean buoy, and the high-orbit satellite is in communication connection with the high-orbit satellite gateway station, the high-orbit satellite measurement and control data center and the ocean observation big data platform in sequence. The ocean buoy communication system and method have the advantages of strong communication capability, stable communication, low power consumption and strong practicability.
Description
Technical Field
The invention relates to the technical field of ocean communication, in particular to an ocean buoy communication system and method based on high-low orbit satellite fusion.
Background
Ocean buoy is used as ocean observation station, needs to work continuously for a long time and 24 hours under abominable environment, gathers and transmits ocean environment data regularly every day, and many ocean monitoring main areas do not have ground network coverage, and data can't be timely effectual transmission for scientific research unit, and ocean buoy volume is less, and the solar energy power supply unit universal power that uses is less, and is extremely high to ocean buoy terminal's dormancy consumption requirement.
The traditional ocean buoy communication terminal mainly depends on a single satellite network to realize the transmission of collected data, but only a part of ocean areas can be covered, the ocean buoy communication terminal is high in price and power consumption, required data cannot be effectively transmitted in time in deep ocean areas without network coverage, and the application of the areas cannot be effectively implemented. It is therefore a need to address the problems of providing a marine buoy communication system and method that is robust in communication, stable in communication, low in power consumption, and practical.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a marine buoy communication system based on high-low orbit satellite fusion. The ocean buoy communication system comprises an ocean buoy, wherein the ocean buoy is in communication connection with a low-orbit satellite through a low-orbit satellite antenna arranged on the ocean buoy, the low-orbit satellite is in communication connection with a low-orbit satellite gateway station, a low-orbit satellite measurement and control data center and an ocean observation big data platform in sequence, the ocean buoy is in communication connection with a high-orbit satellite through a high-orbit satellite antenna arranged on the ocean buoy, and the high-orbit satellite is in communication connection with the high-orbit satellite gateway station, the high-orbit satellite measurement and control data center and the ocean observation big data platform in sequence.
As a further improvement of the invention, the low-orbit satellite is a Beidou cloud satellite, and the high-orbit satellite is a Beidou No. three short message satellite.
As a further improvement of the invention, the ocean buoy comprises an MCU main control unit, the MCU main control unit is respectively connected with a data acquisition module, a singlechip, a memory, a low-orbit satellite communication module, a high-orbit satellite communication module and a positioning time service module, the low-orbit satellite communication module is connected with a low-orbit satellite antenna, the high-orbit satellite communication module and the positioning time service module are both connected with the high-orbit satellite antenna, the ocean buoy further comprises a power supply module, and the power supply module supplies power to other equipment of the ocean buoy through a circuit.
As a further improvement of the invention, the MCU main control unit is connected with the data acquisition module through an RS232 serial port, and the memory is a FLASH memory.
As a further improvement of the invention, the singlechip is an ultra-low power consumption singlechip.
As a further improvement of the invention, the low-orbit satellite antenna is a Beidou cloud satellite antenna, and the high-orbit satellite antenna is a Beidou No. three short message satellite antenna. The communication frequencies of the Beidou cloud satellite and the Beidou third short message satellite are similar, in order to prevent mutual interference during traffic, isolation design is adopted, integrated receiving and transmitting antennas are respectively adopted, and through simulation design, the distance between the Beidou cloud satellite antenna and the Beidou third short message satellite antenna is more than 30CM, so that the communication requirement can be met. Because of the large waves at sea, the antenna installation needs to be fixedly installed on top of the ocean buoy. The antenna receiving frequency of the ocean buoy positioning time service module is within the receiving range of the Beidou No. three short message satellite antenna, so that the ocean buoy positioning time service module can be reused without using an independent positioning time service module antenna.
The invention also provides a ocean buoy communication method based on high-low orbit satellite fusion, which comprises the following steps: when the ocean buoy is in a low-power consumption timing on-off mode, when the ocean buoy needs to communicate with an ocean observation big data platform at the arrival timing on-time, the ocean buoy searches for low-orbit satellite communication signals through a low-orbit satellite communication module arranged on the ocean buoy, ocean data collected by the ocean buoy are transmitted to a low-orbit satellite, the low-orbit satellite sequentially transmits the ocean data to a low-orbit satellite gateway station, a low-orbit satellite measurement and control data center and the ocean observation big data platform, if the ocean buoy cannot search for the low-orbit satellite communication signals or data packets, the low-orbit satellite communication module is closed, only the high-orbit satellite communication module is opened, the high-orbit satellite communication signals are searched for, the ocean data collected by the ocean buoy are transmitted to the high-orbit satellite, the high-orbit satellite sequentially transmits the ocean data to the high-orbit satellite gateway station, the high-orbit satellite measurement and control data center and the ocean observation big data platform, when the data quality meets the requirements, the ocean buoy enters into a closing mode after the communication is finished, and waits for the next timing on-time to communicate, and when the data quality does not meet the requirements, the high-orbit satellite communication module is continuously started, the high-orbit satellite communication module is searched for the high-orbit satellite communication signals, and the high-orbit satellite communication signals are sequentially transmitted to the high-orbit satellite communication station, and the ocean data collected by the ocean buoy.
As a further improvement of the invention, when the ocean buoy is started up for the first time, each module of the ocean buoy is initialized and self-inspected, the positioning time service module obtains the initial position and time information of the ocean buoy through the high-orbit satellite antenna and the high-orbit satellite communication, the positioning time service module transmits the initial position and time information to the MCU main control unit, the MCU main control unit extracts parameters in a memory, the opening and closing time of the data acquisition module, the singlechip, the high-orbit satellite communication module and the low-orbit satellite communication module is calculated according to the communication frequency initially set in the MCU main control unit, then, other units and modules except the singlechip are continuously started up and are closed according to the closing time calculated by the MCU main control unit, when the opening time of the MCU main control unit is reached, the singlechip wakes up the MCU main control unit, the MCU main control unit sends a data acquisition instruction to the data acquisition module, the data acquisition module transmits the acquired ocean data to the MCU main control unit, the MCU main control unit stores the ocean data in a memory, when the opening time of the high-orbit satellite communication module or the low-orbit satellite communication module is reached, the MCU main control unit transmits the ocean data in the memory to the high-orbit satellite or the low-orbit satellite through the high-orbit satellite communication module or the low-orbit satellite communication module and the high-orbit satellite antenna or the low-orbit satellite antenna, when the data quality meets the requirement, the ocean buoy and the high-orbit satellite or the low-orbit satellite are closed in one time, other units and modules except the singlechip are continuously opened, the ocean buoy is closed according to the closing time calculated by the MCU main control unit, and when the opening time of the MCU main control unit is waited for next time, the data quality does not meet the requirement, the MCU main control unit continuously transmits the ocean data in the memory to the high-orbit satellite or the low-orbit satellite through the high-orbit satellite communication module or the low-orbit satellite communication module and the high-orbit satellite antenna or the low-orbit satellite antenna.
As a further improvement of the invention, the data storage and the data reading in the ocean buoy storage are two independent processes, when the data is stored, the storage starts to store the data from the initial address 0 after the data is received, when the storage address reaches the maximum storage capacity, the old data is erased from the initial address 0, the overlay storage is carried out, when the data is read, the data to be transmitted is read from the reading address, and when the reading address reaches the storage address, the data is completely read.
Compared with the prior art, the ocean buoy communication system and method based on high-low orbit satellite fusion provided by the invention have the following advantages:
1. The invention can realize the fusion communication of the high orbit satellite network and the low orbit satellite network, and the ocean buoy adaptively selects the high orbit communication channel and the low orbit communication channel under different satellite network environments, thereby enhancing the communication capability of the terminal;
2. The invention adopts a low power consumption mode, ensures the optimal selection of the ocean buoy in a communication state through the collocation design of high-low orbit satellites, and works with extremely low power consumption in a dormant state;
3. When the low-orbit satellite network cannot be used or data packet loss occurs, the data packet loss can be seamlessly converted into the high-orbit satellite network for data complementary transmission, so that the communication stability is greatly improved, the packet loss rate is reduced, and the practicability of the terminal is improved.
Drawings
FIG. 1 is a schematic diagram of a marine buoy communication system based on high and low orbit satellite fusion according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of the internal structure of a marine buoy in a marine buoy communication system based on high-low orbit satellite fusion according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for communicating via a marine buoy based on high-low orbit satellite fusion according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a ocean buoy workflow in an ocean buoy communication method based on high-low orbit satellite fusion according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the operation of a marine buoy storage in a marine buoy communication method based on high-low orbit satellite fusion according to one embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is described in further detail below with reference to the attached drawing figures:
As shown in FIG. 1, the invention provides a marine buoy communication system based on high-low orbit satellite fusion. The ocean buoy communication system comprises an ocean buoy, wherein the ocean buoy is in communication connection with a low-orbit satellite through a low-orbit satellite antenna arranged on the ocean buoy, the low-orbit satellite is in communication connection with a low-orbit satellite gateway station, a low-orbit satellite measurement and control data center and an ocean observation big data platform in sequence, the ocean buoy is in communication connection with a high-orbit satellite through a high-orbit satellite antenna arranged on the ocean buoy, and the high-orbit satellite is in communication connection with the high-orbit satellite gateway station, the high-orbit satellite measurement and control data center and the ocean observation big data platform in sequence. The low-orbit satellite is a Beidou cloud satellite, and the high-orbit satellite is a Beidou No. three short message satellite.
As shown in fig. 2, the ocean buoy comprises an MCU main control unit, the MCU main control unit is respectively connected with a data acquisition module, a singlechip, a memory, a low-orbit satellite communication module, a high-orbit satellite communication module and a positioning time service module, the low-orbit satellite communication module is connected with a low-orbit satellite antenna, the high-orbit satellite communication module and the positioning time service module are both connected with the high-orbit satellite antenna, the ocean buoy further comprises a power supply module, and the power supply module supplies power to other equipment of the ocean buoy through a circuit. The MCU main control unit is connected with the data acquisition module through an RS232 serial port, and the memory is a FLASH memory. The singlechip is an ultra-low power consumption singlechip. The low-orbit satellite antenna is a Beidou cloud satellite antenna, and the high-orbit satellite antenna is a Beidou No. three short message satellite antenna. The communication frequencies of the Beidou cloud satellite and the Beidou third short message satellite are similar, in order to prevent mutual interference during traffic, isolation design is adopted, integrated receiving and transmitting antennas are respectively adopted, and through simulation design, the distance between the Beidou cloud satellite antenna and the Beidou third short message satellite antenna is more than 30CM, so that the communication requirement can be met. Because of the large waves at sea, the antenna installation needs to be fixedly installed on top of the ocean buoy. The antenna receiving frequency of the ocean buoy positioning time service module is within the receiving range of the Beidou No. three short message satellite antenna, so that the ocean buoy positioning time service module can be reused without using an independent positioning time service module antenna.
The battery module of the ocean buoy usually uses solar energy or a battery, is used as a disposable buoy type, needs to monitor the ocean environment for a long time, has extremely high requirement on power consumption, adopts a mode of waking up a main control chip at regular time by an ultra-low power consumption singlechip in the ocean buoy for reducing the power consumption of the ocean buoy, wakes up each module in set data communication time, enables the chip with high power consumption to enter a dormant state when not communicating, and closes the power supply of other modules, thereby achieving the ultra-low power consumption design of the whole device and being capable of controlling the current within the range of less than 5 mu A.
As shown in FIG. 3, the invention also provides a ocean buoy communication method based on high-low orbit satellite fusion. The method comprises the following steps: when the ocean buoy is in a low-power consumption timing on-off mode, when the ocean buoy needs to communicate with an ocean observation big data platform at the arrival timing on-time, the ocean buoy searches for low-orbit satellite communication signals through a low-orbit satellite communication module arranged on the ocean buoy, ocean data collected by the ocean buoy are transmitted to a low-orbit satellite, the low-orbit satellite sequentially transmits the ocean data to a low-orbit satellite gateway station, a low-orbit satellite measurement and control data center and the ocean observation big data platform, if the ocean buoy cannot search for the low-orbit satellite communication signals or data packets, the low-orbit satellite communication module is closed, only the high-orbit satellite communication module is opened, the high-orbit satellite communication signals are searched for, the ocean data collected by the ocean buoy are transmitted to the high-orbit satellite, the high-orbit satellite sequentially transmits the ocean data to the high-orbit satellite gateway station, the high-orbit satellite measurement and control data center and the ocean observation big data platform, when the data quality meets the requirements, the ocean buoy enters into a closing mode after the communication is finished, and waits for the next timing on-time to communicate, and when the data quality does not meet the requirements, the high-orbit satellite communication module is continuously started, the high-orbit satellite communication module is searched for the high-orbit satellite communication signals, and the high-orbit satellite communication signals are sequentially transmitted to the high-orbit satellite communication station, and the ocean data collected by the ocean buoy.
As shown in fig. 4, when the ocean buoy is started up for the first time, each module of the ocean buoy is initialized and self-inspected, the positioning time service module obtains the initial position and time information of the ocean buoy through the high-orbit satellite antenna and the high-orbit satellite communication, the positioning time service module transmits the initial position and time information to the MCU main control unit, the MCU main control unit extracts parameters in a memory, the opening and closing time of the data acquisition module, the singlechip, the high-orbit satellite communication module and the low-orbit satellite communication module is calculated according to the communication frequency initially set in the MCU main control unit, then, other units and modules except the singlechip are continuously opened and closed according to the closing time calculated by the MCU main control unit in the ocean buoy, when the opening time of the MCU main control unit is reached, the singlechip wakes the MCU main control unit, and the MCU main control unit sends a data acquisition instruction to the data acquisition module, the data acquisition module transmits the acquired ocean data to the MCU main control unit, the MCU main control unit stores the ocean data in the memory, when the opening time of the high-orbit satellite communication module or the low-orbit satellite communication module is reached, the MCU main control unit transmits the ocean data in the memory to the high-orbit satellite or the low-orbit satellite through the high-orbit satellite communication module and the high-orbit satellite antenna or the low-orbit satellite antenna, when the data quality meets the requirement, the ocean buoy and the high-orbit satellite or the low-orbit satellite finish one-time communication, other units and modules except the singlechip are continuously opened and closed according to the closing time calculated by the MCU main control unit, the MCU main control unit continuously passes the ocean data in the memory through the high-orbit satellite communication module or the low-orbit satellite communication module when the data quality does not meet the requirement next time, the high-orbit satellite antenna or the low-orbit satellite antenna is transmitted to the high-orbit satellite or the low-orbit satellite.
As shown in fig. 5, the ocean buoy memory stores data and reads data as two independent processes, when the memory receives the data, the memory starts to store the data from a start address 0, when the storage address reaches the maximum storage capacity, the old data is erased from the start address 0 for overlay storage, when the data is read, the data to be transmitted is read from a read address, and when the read address reaches the storage address, the data is completely read.
Example one, ocean buoy working example
When the ocean buoy is started for the first time, each module of the ocean buoy is initialized and self-inspected firstly, the positioning time service module obtains the initial longitude and latitude position and UTC time information of the ocean buoy through the Beidou third short message satellite antenna and the Beidou third short message satellite communication, the positioning time service module transmits the initial position and time information to the MCU main control unit, the MCU main control unit extracts parameters in a memory, then the opening and closing time of the data acquisition module, the singlechip, the Beidou third short message satellite communication module and the Beidou cloud satellite communication module are calculated according to the initially set 24-hour communication frequency in the MCU main control unit, and then other units and modules except the ultralow power singlechip in the ocean buoy are continuously opened and are all closed according to the closing time calculated by the MCU main control unit. When the starting time of the MCU master control unit is reached, the ultra-low power singlechip wakes up the MCU master control unit, the MCU master control unit sends data acquisition instructions to the data acquisition module through an RS232 serial port, the data acquisition module transmits acquired ocean data to the MCU master control unit, the MCU master control unit stores the ocean data in a memory, when the starting time of the MCU master control unit reaches the opening time of the Beidou three-number short message satellite communication module or the Beidou cloud satellite communication module, the MCU master control unit transmits the ocean data in the memory to the Beidou three-number short message satellite or the Beidou cloud satellite through the Beidou three-number short message satellite communication module or the Beidou three-number short message satellite, when the data quality meets the requirements, the ocean buoy and the Beidou three-number short message satellite or the Beidou cloud satellite end in one time, the other units and the modules are continuously started in the ocean buoy except for the ultra-low power singlechip, the next starting time of the MCU master control unit is waited, and when the data quality does not meet the requirements, the data in the memory continues to transmit the ocean data to the Beidou three-number short message satellite communication module or the Beidou three-number short message satellite communication satellite or the Beidou three-cloud satellite.
Second embodiment, ocean buoy storage working embodiment
The ocean buoy memory is provided with two independent processes for storing data and reading data, when the memory receives the data, the memory starts to store the data from a starting address 0, the longest storage length is limited to be 200 bytes, the storage address is set to be progressive in sequence according to 256 bytes, and when the storage address reaches the maximum storage capacity, old data is erased from the starting address 0, and overlay storage is carried out. When the data is read, the data to be transmitted is read from the read address, and when the read address reaches the storage address, the data is completely read. If Beidou cloud satellite communication is adopted currently, 200 bytes are read once to be used as one packet of data to be sent, and if Beidou No. three short message communication is adopted currently, continuous reading is carried out 5 times, and a total of 1000 bytes of data packets are used as one packet of data to be sent.
Embodiment three, ocean buoy communication working embodiment based on high-low orbit satellite fusion
When the ocean buoy arrives at the timing start-up time and needs to communicate with the ocean observation big data platform, the ocean buoy searches for the Beidou cloud satellite communication signals through the Beidou cloud satellite communication module arranged on the ocean buoy, the limited search time is 1 minute, the ocean data collected by the ocean buoy are transmitted to the Beidou cloud satellite, the Beidou cloud satellite sequentially transmits the ocean data to the Beidou cloud satellite signal gateway station, the Beidou cloud satellite measurement and control data center and the ocean observation big data platform, if the ocean buoy searches for the Beidou cloud satellite communication signals or data packets are lost, the Beidou cloud satellite communication module is closed, the Beidou three-number short message satellite communication module is only started, the Beidou three-number short message satellite communication signals are searched for, the Beidou three-number short message satellite is transmitted to the Beidou three-number short message satellite, the Beidou three-number short message satellite is sequentially transmitted to the Beidou three-number short message satellite gateway station, the three-number short message satellite measurement and control data center, the Beidou big data platform is sequentially transmitted to the Beidou cloud satellite, the Beidou three-number short message satellite signal transmission system is continuously transmitted to the Beidou three-number short message satellite after the Beidou cloud satellite signal transmission system is started, and the Beidou satellite signal transmission time is not required to be transmitted to the three-number short message satellite signal transmission time after the Beidou cloud satellite communication module is started, and the Beidou short message satellite signal transmission system is continuously started up.
When the data received by the ocean observation big data platform is missing, an instruction is sent to the ocean buoy to request the data supplement transmission, and the data supplement transmission is carried out through the Beidou No. three short message satellite communication module. When a large amount of data needs to be transmitted, the Beidou cloud satellite communication and the Beidou third short message satellite communication are needed to alternately transmit the data, the Beidou cloud satellite communication module and the Beidou third short message satellite communication module are simultaneously started in the state, the Beidou third short message satellite communication is used for transmitting the data once in 1 packet/1 minute, and when the Beidou cloud satellite signal meets the communication condition in a communication gap of each minute, the remaining data is continuously transmitted in a frequency of 1 packet/1 second. And if the data is emergency data or important data, the data is simultaneously transmitted by adopting Beidou cloud satellite communication and Beidou third short message satellite communication. In the data communication process, waiting whether the ocean observation big data platform instruction information is downloaded, if so, changing the setting of the ocean buoy, and selecting Beidou cloud satellite communication or Beidou No. three short message satellite communication according to the instruction.
Conclusion:
the ocean buoy communication system and method based on high-low orbit satellite fusion provided by the invention have the following advantages:
1. The invention can realize the fusion communication of the high orbit satellite network and the low orbit satellite network, and the ocean buoy adaptively selects the high orbit communication channel and the low orbit communication channel under different satellite network environments, thereby enhancing the communication capability of the terminal;
2. The invention adopts a low power consumption mode, ensures the optimal selection of the ocean buoy in a communication state through the collocation design of high-low orbit satellites, and works with extremely low power consumption in a dormant state;
3. When the low-orbit satellite network cannot be used or data packet loss occurs, the data packet loss can be seamlessly converted into the high-orbit satellite network for data complementary transmission, so that the communication stability is greatly improved, the packet loss rate is reduced, and the practicability of the terminal is improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The ocean buoy communication system based on the integration of high-low orbit satellites comprises an ocean buoy and is characterized in that the ocean buoy is in communication connection with a low-orbit satellite through a low-orbit satellite antenna arranged on the ocean buoy, the low-orbit satellite is in communication connection with a low-orbit satellite gateway station, a low-orbit satellite measurement and operation control data center and an ocean observation big data platform in sequence, and the ocean buoy is in communication connection with a high-orbit satellite through a high-orbit satellite antenna arranged on the ocean buoy, and the high-orbit satellite is in communication connection with the high-orbit satellite gateway station, the high-orbit satellite measurement and operation control data center and the ocean observation big data platform in sequence;
When the ocean buoy is in a low-power consumption timing on-off mode, when the ocean buoy needs to communicate with an ocean observation big data platform at the arrival timing on-time, the ocean buoy searches for low-orbit satellite communication signals through a low-orbit satellite communication module arranged on the ocean buoy, ocean data collected by the ocean buoy are transmitted to a low-orbit satellite, the low-orbit satellite sequentially transmits the ocean data to a low-orbit satellite gateway station, a low-orbit satellite measurement and control data center and the ocean observation big data platform, if the ocean buoy cannot search for the low-orbit satellite communication signals or data packets, the low-orbit satellite communication module is closed, only the high-orbit satellite communication module is opened, the high-orbit satellite communication signals are searched for, the ocean data collected by the ocean buoy are transmitted to the high-orbit satellite, the high-orbit satellite sequentially transmits the ocean data to the high-orbit satellite gateway station, the high-orbit satellite measurement and control data center and the ocean observation big data platform, when the data quality meets the requirements, the ocean buoy enters into a closing mode after the communication is finished, and waits for the next timing on-time to communicate, and when the data quality does not meet the requirements, the high-orbit satellite communication module is continuously started, the high-orbit satellite communication module is searched for the high-orbit satellite communication signals, and the high-orbit satellite communication signals are sequentially transmitted to the high-orbit satellite communication station, and the ocean data collected by the ocean buoy.
2. The ocean buoy communication system of claim 1, wherein the low-orbit satellite is a beidou cloud satellite and the high-orbit satellite is a beidou No. three short message satellite.
3. The ocean buoy communication system according to claim 1, wherein the ocean buoy comprises an MCU main control unit, the MCU main control unit is respectively connected with a data acquisition module, a singlechip, a memory, a low-orbit satellite communication module, a high-orbit satellite communication module and a positioning time service module, the low-orbit satellite communication module is connected with a low-orbit satellite antenna, the high-orbit satellite communication module and the positioning time service module are both connected with the high-orbit satellite antenna, and the ocean buoy further comprises a power supply module which supplies power to other equipment of the ocean buoy through a circuit.
4. The ocean buoy communication system of claim 3, wherein the MCU main control unit is connected to the data acquisition module through an RS232 serial port, and the memory is a FLASH memory.
5. A marine buoy communication system according to claim 3, wherein the single-chip microcomputer is an ultra-low power consumption single-chip microcomputer.
6. The ocean buoy communication system of claim 3, wherein the low-orbit satellite antenna is a Beidou cloud satellite antenna, the high-orbit satellite antenna is a Beidou No. three short message satellite antenna, and the Beidou cloud satellite antenna and the Beidou No. three short message satellite antenna are fixedly installed on the top of the ocean buoy and are more than 30CM apart.
7. A marine buoy communication method based on high-low orbit satellite fusion is characterized in that a marine buoy is in a low-power consumption timing on-off mode, when the marine buoy needs to communicate with a marine observation large data platform when the marine buoy arrives at timing on-time, the marine buoy searches for low-orbit satellite communication signals through a low-orbit satellite communication module arranged on the marine buoy, marine data collected by the marine buoy are transmitted to a low-orbit satellite, the low-orbit satellite sequentially transmits the marine data to a low-orbit satellite gateway station, a low-orbit satellite measurement and control data center and the marine observation large data platform, if the marine buoy cannot search for the low-orbit satellite communication signals or data packets are lost, the low-orbit satellite communication module is closed, only the high-orbit satellite communication module is opened, the high-orbit satellite communication signals are searched for, the marine data collected by the marine buoy are transmitted to the high-orbit satellite, the high-orbit satellite measurement and control data center and the marine observation large data platform sequentially, when the data quality meets the requirements, the marine buoy enters a closing mode after the communication is finished, and the next timing on-orbit satellite communication is waited, when the quality of the marine buoy does not meet the requirements for the next on-time, the high-orbit satellite communication signals are transmitted to the high-orbit satellite communication center and the marine buoy, and the high-orbit satellite communication data are transmitted to the high-orbit satellite communication station.
8. The ocean buoy communication method according to claim 7, wherein when the ocean buoy is started up for the first time, each module of the ocean buoy is initialized and self-inspected, the positioning time service module obtains initial position and time information of the ocean buoy through high orbit satellite antenna and high orbit satellite communication, the positioning time service module transmits the initial position and time information to the MCU main control unit, the MCU main control unit extracts parameters in a memory, then the opening and closing time of the data acquisition module, the singlechip, the high orbit satellite communication module and the low orbit satellite communication module are calculated according to the communication frequency initially set in the MCU main control unit, then other units and modules except the singlechip are continuously started up and are closed according to the closing time calculated by the MCU main control unit, when the opening time of the MCU main control unit is reached, the singlechip wakes up the MCU main control unit, the MCU main control unit sends a data acquisition instruction to the data acquisition module, the data acquisition module transmits the acquired ocean data to the MCU main control unit, the MCU main control unit stores the ocean data in a memory, when the opening time of the high-orbit satellite communication module or the low-orbit satellite communication module is reached, the MCU main control unit transmits the ocean data in the memory to the high-orbit satellite or the low-orbit satellite through the high-orbit satellite communication module or the low-orbit satellite communication module and the high-orbit satellite antenna or the low-orbit satellite antenna, when the data quality meets the requirement, the ocean buoy and the high-orbit satellite or the low-orbit satellite are closed in one time, other units and modules except the singlechip are continuously opened, the ocean buoy is closed according to the closing time calculated by the MCU main control unit, and when the opening time of the MCU main control unit is waited for next time, the data quality does not meet the requirement, the MCU main control unit continuously transmits the ocean data in the memory to the high-orbit satellite or the low-orbit satellite through the high-orbit satellite communication module or the low-orbit satellite communication module and the high-orbit satellite antenna or the low-orbit satellite antenna.
9. The method of claim 7, wherein the storing data in the ocean buoy memory and the reading data are two independent processes, wherein the storing data starts from a start address 0 after the storing data, and when the storing address reaches a maximum storage capacity, the old data is erased from the start address 0 for overlay storage, and when the data is read, the data to be transmitted starts from a reading address, and when the reading address reaches the storing address, the data is completely read.
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