CN107483097B - Method is exchanged between a kind of low rate star based on location information - Google Patents
Method is exchanged between a kind of low rate star based on location information Download PDFInfo
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- CN107483097B CN107483097B CN201710627165.5A CN201710627165A CN107483097B CN 107483097 B CN107483097 B CN 107483097B CN 201710627165 A CN201710627165 A CN 201710627165A CN 107483097 B CN107483097 B CN 107483097B
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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
- H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
-
- 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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18582—Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
-
- 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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18584—Arrangements for data networking, i.e. for data packet routing, for congestion control
-
- 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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18586—Arrangements for data transporting, e.g. for an end to end data transport or check
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
Method is exchanged between a kind of low rate star based on location information, this method is based on needing to establish two numbers of different rail inter-satellite link according to the information transceiving equipment on acquisition satellite, utilize the real-time acquisition time of spaceborne GNSS receiver data, latitude and longitude information etc., and then using latitude and longitude information judge this node whether this circle will pass by control transceiver exchange data, if present satellites will pass by, exchange data are not needed then, and stored data is all returned into earth station when passing by；If this circle of present satellites does not pass by, when latitude reaches data exchange critical point, it is switched on and simultaneously transmits data to the next-hop satellite in adjacent orbit face using transceiver between star, until is transmitted to the satellite that passes by, and then by data back.
Description
Technical field
The present invention relates to exchange method between a kind of low rate star.
Background technique
Current low rail communication satellite constellation or quickly returning for information is realized using complicated inter-satellite link and route system
It passes, for example anIridium satellite constellation or realizes that information is quickly landed and returned using a large amount of earth station of distribution on global, such as
GlobalStar constellation for this situation current to China, had both been not easy large scale investment and has established group network system between complicated star,
It is not easy to build large number of ground in the world again and carrys out return data, study one kind simply and effectively based on the low speed of location information
It is very necessary that method is exchanged between rate star.
As the important component of future space information collection and transmission network, data acquire satellite system with wide area point
The information that scattered ground transaucer obtains is data source, realizes big region low latency information Perception using small satellite constellation, is
User provides the short data acquisition, short data communication and information broadcast for being adapted to the different applications environment such as land, ocean and aviation
Service.The data acquisition satellite system designed at present can be acquired data, converges, handles, distribute, and pass through planar over the ground
State information directly perceives, and realizes that high accuracy in-situ detects over the ground, has that data transmission high sensitivity, region spreadability be wide, terminal
Small, the features such as customer using cost is low, it is more to be suitable for number of users, but volume of transmitted data is small, the not high application of requirement of real-time.
With Chinese society fast development, the public goods application such as disaster monitoring and early warning, environmental monitoring, search and rescue in danger, Internet of Things
The business applications such as net, communication and logistics, and diversified Military Application propose urgent need to data acquisition constellation systems.Consider
There is no inter-satellite link to current data acquisition satellite system, causes the weak of data acquisition time delay larger (maximum was up to 10 hours)
Point, it is difficult to meet efficient low time delay information transmission service, constrain the integrity service performance of the system.
Therefore, exchange method is to promote data acquisition satellite system network performance between designing the low rate star being simple and efficient
One important subject.It is not suitable for suitably still exchanging method between the star of data acquisition satellite system at present.
Summary of the invention
The technical problem to be solved by the present invention is overcome the deficiencies in the prior art, propose a kind of based on location information
Method is exchanged between low rate star, has protocol algorithm simple, and does not need location information or topology letter that node knows the whole network
The advantages that breath is i.e. executable, is particularly suitable for dynamic topology and the limited low rate of on-board processing ability low rail information network system
System.
The technical scheme adopted by the invention is that: method, including step are exchanged between a kind of low rate star based on location information
It is rapid as follows:
Step 1: establishing low rail communication constellation, guarantee to realize all standing to a certain region of the earth or the whole world；Low rail communicates star
Whole satellites are respectively mounted transmitting-receiving process machine and dual-mode antenna in seat, and adjacent orbit is in when the installation of antenna will ensure in orbit
On adjacent two satellites be in the coverage area of other side's antenna beam；Whole satellites utilize spaceborne in low rail communication constellation
GNSS receiver obtains latitude and longitude information locating for satellite in real time；
Step 2: in low rail communication constellation, it is any to choose two adjacent satellites on adjacent orbit, make respectively
For transmitting satellite and receive satellite；
Step 3: judging to emit whether satellite will pass by using latitude and longitude information locating for transmitting satellite itself: if hair
It penetrates satellite to pass by within the locating orbital period, then emits satellite with satellite is received and do not exchange data, emit satellite when passing by, it will
Stored data is all back to earth station, and method terminates；If transmitting satellite does not pass by within the locating orbital period, transmitting satellite exists
In operational process, when latitude reaches data exchange critical point, transmitting satellite transmits data to satellite is received, and enters step four；
Step 4: satellite will be received as new transmitting satellite, another phase of adjacent orbit will be in reception satellite
Adjacent satellite repeats step 3 as new reception satellite, until data are transmitted back to earth station.
The judgment method whether transmitting satellite will pass by are as follows: calculate satellite trimming according to the orbital characteristics of satellite and pass by
Longitude and latitude range, the longitude and latitude range that satellite trimming is passed by is stored on satellite, satellite is according to the satellite trimming of storage
The longitude and latitude range in border judges whether to pass by: when the locating latitude and longitude information that satellite obtains in real time is in the warp that satellite trimming is passed by
When latitude scope, then the satellite passes by within the locating orbital period；Otherwise, which does not pass by within the locating orbital period.
The data exchange critical point refers to the boundary point for the longitude and latitude range that satellite trimming is passed by.
The advantages of the present invention over the prior art are that:
(1) method of the invention can simplify communication payload load between Satellite, and load relative bearing is fixed, and star is reduced
Between communication equipment development difficulty, the batch production for load of being more convenient for, and algorithm is simple, every satellite need to only know the warp of itself
Information exchange can be completed in latitude information, and compared to traditional network routing technology, method more simple and effective does not need complicated star
Carry hardware device and software systems；
(2) the long-term power consumption of route switching part can be switched to short-term power consumption by method of the invention.Load only need to be in north
Hemisphere high latitude area booting exchange data, most of the time are in off-mode, have well solved power problems；
(3) method of the invention has the advantage of data exchange snap information passback between star, and need to only lay at home few
Earth station is measured, that is, current data acquisition satellite system Time Delay of Systems performance is remarkably improved, by current maximum delay about 10 hours
It is promoted about 1.5 hours, average information turn around time is about at 40 minutes.
(4) method of the invention requires no knowledge about the location information of other nodes, does not also need maintenance topological relation and choosing
Routing by, but according to node location information and lift rail information directly be switched on transmitting data packet.Method is simple and efficient, and is saved
The energy shortens the passback time delay of global range data acquisition satellite system user information.
Detailed description of the invention
Fig. 1 is the specific implementation flow chart of the method for the present invention；
Fig. 2 passes by for satellite judges schematic diagram.
Specific embodiment
The present invention is to exchange method between a kind of low rate star based on location information, and every satellite only needs real-time servicing itself
Time and the information such as position, and the fixed latitude in high latitude area and longitude region carry out data exchange on the Northern Hemisphere, hand over
Double star relative bearing is relatively more fixed when changing, and every star only need to install signal receiving antenna in an orientation, in another orientation
Installation signal transmitting antenna can meet the needs of exchange, the maximum delay of entire constellation can be promoted to 1 by 10 hours
Half an hour can substantially meet most of data acquisition user's delay requirement.
As shown in Figure 1, exchanging method between the invention discloses a kind of low rate star based on location information, including step is such as
Under:
Step 1: establishing low rail communication constellation, guarantee to realize all standing to a certain region of the earth or the whole world；Low rail communicates star
Whole satellites are respectively mounted transmitting-receiving process machine and dual-mode antenna in seat, and adjacent orbit is in when the installation of antenna will ensure in orbit
On adjacent two satellites be in the coverage area of other side's antenna beam；Whole satellites utilize spaceborne in low rail communication constellation
GNSS (Global Navigation Satellite System) receiver obtains latitude and longitude information locating for satellite in real time；
Step 2: in low rail communication constellation, it is any to choose two adjacent satellites on adjacent orbit, make respectively
For transmitting satellite and receive satellite；
Step 3: judging to emit whether satellite will pass by using latitude and longitude information locating for transmitting satellite itself:
If transmitting satellite passes by within the locating orbital period, emits satellite with satellite is received and do not exchange data, transmitting is defended
Star is all back to earth station when passing by, by stored data, and method terminates；
If transmitting satellite does not pass by within the locating orbital period, emit satellite in the process of running, when latitude reaches setting
Data exchange critical point when, transmitting satellite to receive satellite transmit data, enter step four；
Step 4: satellite will be received as new transmitting satellite, another phase of adjacent orbit will be in reception satellite
Adjacent satellite repeats step 3 as new reception satellite, until data are transmitted back to earth station.
The judgment method whether satellite will pass by are as follows: calculate the warp that satellite trimming is passed by according to the orbital characteristics of satellite
The longitude and latitude range that satellite trimming is passed by is stored on satellite by latitude scope, and satellite passes by according to the satellite trimming of storage
Longitude and latitude range judges whether to pass by: when the locating latitude and longitude information that satellite obtains in real time is in the longitude and latitude that satellite trimming is passed by
When range, then the satellite passes by within the locating orbital period；Otherwise, which does not pass by within the locating orbital period.
Data exchange critical point refers to the boundary point for the longitude and latitude range that satellite trimming is passed by, and is special according to the track of satellite
Property, the exchange duration demand of data, dual-mode antenna coverage area determine.
Embodiment 1
Here by taking the low rail data for covering China region and periphery acquire constellation as an example, the constellation totally 36 satellites, track
Inclination angle is 48 °.Every number carries a secondary receiving antenna, a secondary transmitting antenna and a TRx processing unit according to acquisition satellite.Often
Satellite determines the position and speed information of itself using spaceborne GNSS device in real time, and the lift rail letter of itself is constantly updated with this
Breath and substar latitude and longitude information, when satellite rail lift is to 36 ° of N, start pass by judgement and booting exchange judgement, to ensure
Resource makes full use of the quick passback with information, when satellite drops rail to 36 ° of N, shuts down energy saving.
By taking the constellation on above-mentioned covering China and periphery as an example, method is exchanged between the low rate star based on location information, including
Steps are as follows:
Step 1: establishing low rail communication constellation, guarantee to realize all standing to a certain region of the earth or the whole world；Low rail communicates star
Whole satellites are respectively mounted transmitting-receiving process machine and dual-mode antenna in seat, and adjacent orbit is in when the installation of antenna will ensure in orbit
On adjacent two satellites be in the coverage area of other side's antenna beam；Whole satellites utilize spaceborne in low rail communication constellation
GNSS receiver obtains latitude and longitude information locating for satellite in real time；
Step 2: in low rail communication constellation, it is any to choose two adjacent satellites on adjacent orbit, make respectively
For transmitting satellite and receive satellite；
Step 3: judging to emit whether satellite will pass by using latitude and longitude information locating for transmitting satellite itself:
If transmitting satellite passes by within the locating orbital period, emits satellite with satellite is received and do not exchange data, transmitting is defended
Star is all back to earth station when passing by, by stored data, and method terminates；
If transmitting satellite does not pass by within the locating orbital period, emit satellite in the process of running, when latitude reaches data
Exchange critical point (latitude value that can satisfy data transfer demands of selection, that choose herein is 36 ° of N) when, transmitting satellite to
It receives satellite and transmits data, enter step four；
1) it passes by judgement
Pass by refer to satellite when moving an orbital period for tri- station A, B and C, can when elevation mask is 15 °
See that any survey station is to pass by this period, judgement of passing by judges that satellite is mainly according to the moving law of satellite orbit
No period passes by, and without opening transmitter if passing by, receiver is only needed to receive, when passing by directly by information back extremely
Three survey stations need booting to carry out data exchange between star, send data to next-hop satellite if this period only border,
To ensure that information is returned with prestissimo.It passes by and judges that algorithm refers to, according to the characteristics of motion of satellite, find out satellite rail lift and drop
Pass through corresponding longitude when data exchange critical point during rail, and then determines longitude and latitude section of passing by.It passes by and judges algorithm
Data exchange provides important criterion between star, and limited information exchange money between star has been ensured while reducing energy consumption as far as possible
Source.
Fig. 2 is that satellite passes by and judges schematic diagram.The circle of three black indicates that three survey station elevation masks are 15 °
When, Observable 900km null data acquires substar longitude and latitude boundary corresponding to satellite, and black arc dotted line is two numbers
It is available along 36 ° of N latitude lines if exchanging the latitude for calculating judgement between star using 36 ° of N according to acquisition Track of Sub-Satellite Point
Black heavy line region is the region (about 150 °~west longitude of east longitude, 25 ° of ranges) that satellite can not directly pass by, if satellite is located at this
A little regions need to carry out information exchange between star, if being located at except the region, this period of satellite passes by.
2) booting exchange judgement
In order to make full use of the energy resource of satellite, when only selection satellite rail lift is to 36 ° of N in the present embodiment, start to be switched on
Prepare transmitting-receiving star swapping data.Satellite can calculate longitude and latitude and lift rail according to own location information and velocity information
Information prepares that is, if present satellites are in the rail lift stage and latitude will start switching equipment between Satellite close to 36 ° of N
Data are sent to the next-hop satellite of adjacent rail, while preparing to receive the data that the upper hop satellite of adjacent rail sends over.
Step 4: satellite will be received as new transmitting satellite, another phase of adjacent orbit will be in reception satellite
Adjacent satellite repeats step 3 as new reception satellite, until data are transmitted back to earth station.
Unspecified part of the present invention belongs to technology well known to those skilled in the art.
Claims (3)
1. exchanging method between a kind of low rate star based on location information, which is characterized in that comprise the following steps that
Step 1: establishing low rail communication constellation, guarantee to realize all standing to a certain region of the earth or the whole world；In low rail communication constellation
Whole satellites are respectively mounted transmitting-receiving process machine and dual-mode antenna, when the installation of antenna will ensure in orbit on adjacent orbit
Adjacent two satellites are in the coverage area of other side's antenna beam；Whole satellites utilize spaceborne GNSS in low rail communication constellation
Receiver obtains latitude and longitude information locating for satellite in real time；
Step 2: in low rail communication constellation, it is any to choose two adjacent satellites on adjacent orbit, respectively as hair
It penetrates satellite and receives satellite；
Step 3: judging to emit whether satellite will pass by using latitude and longitude information locating for transmitting satellite itself: if transmitting is defended
Star passes by within the locating orbital period, then emits satellite with satellite is received and do not exchange data, emits satellite when passing by, will be deposited
Data are all back to earth station, and method terminates；If transmitting satellite does not pass by within the locating orbital period, transmitting satellite is being run
In the process, when latitude reaches data exchange critical point, transmitting satellite transmits data to satellite is received, and enters step four；
Step 4: satellite will be received as new transmitting satellite, by with receive satellite be in another of adjacent orbit it is adjacent
Satellite repeats step 3 as new reception satellite, until data are transmitted back to earth station.
2. exchanging method between a kind of low rate star based on location information according to claim 1, which is characterized in that transmitting
The judgment method whether satellite will pass by are as follows: calculate the longitude and latitude model that satellite trimming is passed by according to the orbital characteristics of satellite
It encloses, the longitude and latitude range that satellite trimming is passed by is stored on satellite, the longitude and latitude that satellite passes by according to the satellite trimming of storage
Range judges whether to pass by: when the locating latitude and longitude information that satellite obtains in real time is in the longitude and latitude range that satellite trimming is passed by
When, then the satellite passes by within the locating orbital period；Otherwise, which does not pass by within the locating orbital period.
3. exchanging method between a kind of low rate star based on location information according to claim 1, which is characterized in that described
The latitude value that can satisfy data transfer demands is chosen in data exchange critical point.
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