CN101334936A - Method and device for expanding monitoring range of air craft based on ADS-B - Google Patents
Method and device for expanding monitoring range of air craft based on ADS-B Download PDFInfo
- Publication number
- CN101334936A CN101334936A CNA2008101180612A CN200810118061A CN101334936A CN 101334936 A CN101334936 A CN 101334936A CN A2008101180612 A CNA2008101180612 A CN A2008101180612A CN 200810118061 A CN200810118061 A CN 200810118061A CN 101334936 A CN101334936 A CN 101334936A
- Authority
- CN
- China
- Prior art keywords
- information
- time slot
- aircraft
- ads
- forwarding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method and a device based on ADS-B which can expand the monitoring range of a plane, provides an information processing method which is based on ADS-B information and is used for expanding the dynamic monitoring range of a plane and a device thereof. The method acquires air traffic information of various planes by analyzing ADS-B information and GNSS information received by the plane and timely updates the mark and position information of the plane, calculates and judges the present status of the plane; when any other plane that does not communicate with the plane appears in the monitoring range, the plane enters a forwarding status, at the moment, the plane chooses a time slot from forwarding time slots to forward the ADS-B information of the other plane, so as to achieve the goal of expanding the dynamic monitoring range of the plane. The method and the device of the invention wholly depend on air-borne electronic equipment of the plane and a satellite navigated receiver, is a self-organized and cooperative plane dynamic monitoring proposal, and especially suitable for the aviation crossing ocean or under severe environmental condition.
Description
Technical field
The present invention relates to a kind of airborne information processing method and device, particularly a kind of method and apparatus of the expansion aircraft surveillance scope based on ADS-B belongs to the air traffic control field.
Background technology
The basic goal of air traffic control is to make aircraft safety on the course line, effective and plannedly fly in the spatial domain, and the controller need dynamically carry out real time monitoring to the flight of aircraft in the control zone.
Traditional radar surveillance means adopt interrogator-responder system to target detection.In the long run, radar system self has a lot of limitation, has limited the raising of monitor performance.The rectilinear propagation of radar beam has formed a large amount of radar shadow, can't cover areas such as ocean and desert; The radar swing circle has limited the raising of data updating rate, thereby has limited the raising that monitors precision; The situation data such as plan air route, speed of aircraft be can't obtain, the raising of tracking accuracy and the ability that short-term collision detects alarm STCA limited.Therefore, need the new supervision means of exploitation.
Automatic dependent surveillance broadcast ADS-B (Automatic Dependence Surveillance-Broadcast) utilizes aircraft to broadcast the precise location information that is generated by airborne satellite-based navigation and positioning system automatically, uphole equipment and other aircrafts receive this information by aeronautical data chain, and satellite system, aircraft and ground based system are realized the integrative coordinated supervision in the empty world by the high-speed data chain.ADS-B has not only overcome some problems of traditional radar surveillance means, and has advantages such as precision height, turnover rate height, applied range, uphole equipment construction and maintenance cost are low.
The ADS-B technology can realize the mutual supervision between aircraft and the aircraft, but its monitoring coverage area is subjected to the restriction of aircraft transmitter, receiver performance, is difficult to provide monitor message in larger scope.Broadcast-type traffic information service TIS-B technology can provide the air traffic information service for aircraft, needs higher expense but build TIS-B land station, and is subjected to the influence of landform, environment etc., is not suitable for setting up land station in zones such as oceans.Automatic dependent surveillance technology (ADS-C) based on contract can provide monitor service for the overhead aircraft in zones such as ocean, but it needs satellite that the communication link road is provided, so its cost of use is very important.
Basic ADS-B system can realize the mutual communication between the aircraft, thereby makes an airplane obtain air traffic situation information on every side, improves the ability of the pre-anticollision of aircraft, reaches the purpose of safe flight.But because airborne communication system is subjected to the restriction of the communication coverage of energy, planeload and antenna, the air traffic situation quantity of information that it can obtain is limited.As shown in Figure 1, the A aircraft can be found B in its place ahead when flying forward, and B can find C in its place ahead, but A can't find C also in its place ahead, and A exists the possibility that bumps against with C.Therefore the monitoring range that needs expansion A aircraft.A kind of method is the transmitter power that enlarges the A aircraft, needs the A aircraft to load the more energy like this, and changes powerful transmitter, and economic benefit is undesirable.Another kind method is by the B aircraft situation information of C aircraft to be passed to the A aircraft.The C aircraft is in the communication coverage of B aircraft, and the B aircraft can " be seen " the C aircraft, and the B aircraft also can " be seen " the A aircraft simultaneously, but A aircraft and C aircraft are sightless mutually.By means of the B aircraft, just can reach the mutual visible effect of A aircraft and C aircraft, thereby increase the dynamic surveillance scope of A aircraft.
Like this, the B aircraft not only needs to transmit the data of B self, also will be responsible for transmitting the data of other aircrafts in the B aircraft surveillance scope, as the A aircraft; B not only serves as the role of " general node " in the network, also will serve as the role of " head-end site "; B is a node having multi-functions.The thought synoptic diagram of this method as shown in Figure 2.
At present, support the data chainning of ADS-B function to have three kinds, be respectively 1090MHz expansion S pattern answering machine, very high frequency(VHF) data chainning pattern 4 and general-purpose accessing transceiver (Universal Access Transceiver, UAT).The UAT data chainning is a kind of data chainning of U.S.'s exploitation, and it has, and system architecture is simple, the strong high characteristics of rate of data signalling of stability, is used for General Aviation by International Civil Aviation Organization's approval at present.The general-purpose accessing transceiver frame structure as shown in Figure 3.The message transmissions integrated application of data chainning time-division visit and random access dual mode, its basic transmission management unit is a frame.According to the data link protocol standard, each UAT frame duration is 1 second, and by second time synchronized zebra time (UTC).The time of each frame is divided into two parts again, is respectively applied for forwarding information broadcasting and self information broadcasting.The time of each frame is divided into 4 sections, forwarding information broadcasting duration is 176ms, be divided into 32 time slots altogether, each time slot 5.5ms, a forwarding time slot comprises 22 MSO (Message Start Opportunity), adopt relatively-stationary time slot predistribution mode to manage, the aircraft of each forwarding information can only be broadcasted a forwarding message p.s..When enough far and not constituting the overlapping covering of communication range apart between the aircraft, can use identical timeslice, to improve the reusability of frequency.Reserve the guard time of 12ms between forwarding information broadcasting and the self information broadcasting, be used for the isolation between forwarding information broadcasting and the self information broadcasting.Aircraft holding time section duration is 800ms altogether, and each time slot comprises 1 MSO, and length is 250 μ s.The mode that self information broadcasting adopts the pseudorandom time slot to select is carried out, and selects a suitable time slot to broadcast from 3200 time slots.The last 12ms of each UTC second is reserved as protection at interval, has time enough to propagate into effective covering space to guarantee last broadcasting, avoid and follow-up forwarding information broadcasting between juxtaposition takes place.
Maggie X.Cheng etc. have proposed a kind of and the relevant air traffic control system (ATCS) of ad hoc network based on the UAT data chainning in its paper " The Connectivity of Ad Hoc Network for AdvancedAir Traffic Management ", this system can strengthen the monitor performance of airborne ADS-B system, especially can improve the monitoring range of airborne ADS-B system; But this paper has only provided a kind of conception, does not provide the specific embodiments of this system.
Summary of the invention
The method and apparatus of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention, taked the self-organization communication technology, this method makes full use of the ADS-B information of aircraft self and the ADS-B information of other aircrafts, based on existing general-purpose accessing transceiver, reach the purpose that increases monitoring range by the ADS-B information of transmitting other aircrafts.This method can make existing aircraft surveillance radius increase, thereby makes the pilot better grasp air traffic information, safeguards air traffic safety.The overall calculated amount of this method is directly proportional with air traffic, and calculation procedure is simple, and is not high to the performance requirement of onboard computer processor, can realize by common embedded computer system fully.
A kind of device of the expansion aircraft surveillance scope based on ADS-B comprises information management unit and communications management unit; Information management unit carries out analyzing and processing after the ADS-B information and the GNSS navigation information that receive are resolved, extracted, upgrade the transport information table, the state exchange information that draws is delivered to communications management unit by interface, and the ADS-B information that generates is put into data queue is delivered to communications management unit; Communications management unit upgrades the forwarding time slot table and the forwarding time slot table that calls after the renewal according to state exchange information generates time slot reservation/release information, and the ADS-B information of aircraft sends to the ADS-B signal transceiver the most at last;
Described information management unit comprises ADS-B information analysis module, ADS-B information extraction modules, GNSS information analysis module, GNSS information extraction modules and state exchange control module, also comprises transport information table update module; ADS-B information analysis module and GNSS information analysis module are resolved the two-way ADS-B information and the GNSS information that receive respectively; ADS-B information extraction modules and GNSS information extraction modules are extracted the information after a part is resolved respectively and are input to transport information table update module respectively and be used to upgrade the transport information table; Transport information table update module by the input parsing after part A DS-B information and part GNSS information the air traffic situation that current aircraft obtained is upgraded; The state exchange control module is called the transport information table and is passed through this machine residing state of next second of computational discrimination of each aircraft coverage, by interface state exchange information is passed to communications management unit; Simultaneously, the ADS-B information of generation is also put into data queue and is delivered to communications management unit.
Described transport information table update module is upgraded the transport information table according to the ADS-B information that is received; When handling the transport information of every airplane, transport information table update module at first extracts 24 bit address sign indicating numbers of this aircraft, and judge according to 24 bit address sign indicating numbers whether the transport information of this aircraft has been present in the transport information table, if then only need the transport information of this aircraft is upgraded; If not, then need add a new list item at the end of transport information table, and with 24 bit address sign indicating numbers of this aircraft, longitude, latitude, highly, speed adds in list item.
Described communications management unit is made up of forwarding time slot table update module, time slot reservation information generating module; Forwarding time slot table update module is extracted time slot reservation information and corresponding aircraft from the ADS-B information of other aircrafts 24 bit address sign indicating numbers upgrade the forwarding time slot table, the time slot reservation information generating module is selected corresponding time slot in the forwarding time slot table, preengage or discharge, and relevant information is formed a data with the ADS-B information of this aircraft send.
Described forwarding time slot table update module is responsible for the forwarding time slot table is upgraded, and obtains the situation that takies of up-to-date forwarding time slot table; Forwarding time slot table update module determines that at first the forwarding time slot table of participating in current second upgrades the number of aircraft, judges its time slot subscription information type one by one to the every airplane with time slot reservation request then; If discharge corresponding time slot, then forwarding time slot table updating block empties the occupied information of certain time slot in the forwarding time slot table; If reservation gap information, forwarding time slot table updating block will be are at first sorted from small to large according to 24 bit address sign indicating numbers of aircraft; The preferential little aircraft of 24 bit address sign indicating numbers of giving distributes time slot; The time slot of preengaging when certain airplane is during by other aircrafts reservations, is its distribution time slot again after the time slot reservation of then waiting for last airplane is finished; After first round time slot allocation finishes, press 24 bit address sign indicating numbers again, from the current time slot of not preengage or taking, choose the time slot allocation of timeslot number minimum and give this aircraft from little extremely big order; When the time slot allocation that still has aircraft imperfect tense, sending time slots subscription information once more after then the uncompleted aircraft of these time slot allocation is waited for 5 seconds, and participate in time slot reservation and distribute.
In the described time slot reservation information generating module, if this aircraft need be preengage time slot, then in the forwarding time slot table after renewal, the time slot reservation information generating module is selected a time slot of timeslot number minimum, its timeslot number as aircraft itself reservation is added in the ADS-B information of this aircraft, and will preengage time slot sign and be made as 1; If this aircraft need discharge time slot, then in the forwarding time slot table that renewal finishes, the time slot reservation information generating module is selected this aircraft 24 bit address sign indicating number time slot corresponding, with its removing, and the timeslot number of being removed is added in the ADS-B information of this aircraft, will discharge time slot sign simultaneously and be made as 0.
Each classifies a list item of transport information table as in the described transport information table, writes down 24 bit address sign indicating numbers, longitude, latitude, height and the speed of every airplane; The length of transport information table is according to the variation how much length takes place of received ADS-B information.
Described forwarding time slot table is made up of 32 unit, 32 occupied situations of forwarding time slot have been represented, this table constantly upgrades the situation that takies of 32 time slots according to the ADS-B information of other aircrafts that current aircraft is received, in time reflects the occupied situation of time slot; This shows 24 bit address sign indicating numbers of the sign of having stored timeslot number, having taken/discharge in each unit, shared aircraft.
A kind of method of the expansion aircraft surveillance scope based on ADS-B comprises the steps:
Step 1: ADS-B information analysis module in the information management unit and GNSS information analysis module receive ADS-B information and GNSS navigation information respectively, respectively ADS-B information and GNSS navigation information are resolved, obtain 24 bit address sign indicating numbers, longitude and latitude and height, course angle, speed, the temporal information of each aircraft;
Step 2: ADS-B information extraction modules in the information management unit extract 24 bit address sign indicating numbers after resolving, longitude, latitude, highly, speed; GNSS information extraction modules in the information management unit is extracted longitude, latitude, height and the velocity information after resolving; ADS-B information after ADS-B information extraction modules and GNSS information extraction modules will be extracted and GNSS navigation information divide two-way to send to transport information table update module in the information management unit respectively;
Step 3: the transport information table update module in the information management unit is according to the positional information of this machine of GNSS information updating; If the current ADS-B information of receiving other aircrafts of aircraft, transport information table update module then from the ADS-B information of other aircrafts of receiving, are extracted the 24 bit address sign indicating numbers that come the most preceding aircraft, judge that this machine is whether in the transport information table; If, then upgrade the longitude, latitude of this aircraft, highly; If do not exist, then with 24 bit address sign indicating numbers, longitude, the latitude of this aircraft, highly write in the list item of new interpolation; Pursue frame and handle the ADS-B information of each aircraft, dispose until whole pending aircrafts;
Step 4: transport information table update module sends to the positional information of all aircrafts in the current communication coverage of this aircraft in the state exchange control module, calculates the communication coverage of two airplanes according to longitude, latitude, altitude gauge; Judge the communication coverage of all interplanes in pairs with the account form of combination, generate state exchange information according to the communication coverage condition that obtains;
The ADS-B information that step 5:ADS-B information analysis module parses goes out is sent to communications management unit from information management unit; State exchange information transmits interface by state exchange information and transmits; The forwarding time slot table update module of communications management unit is extracted time slot reservation information and corresponding aircraft from the ADS-B information of other aircrafts of data queue 24 bit address sign indicating numbers upgrade the forwarding time slot table;
Step 6: the time slot reservation information generating module of communications management unit is judged state under this aircraft according to state exchange information; If this aircraft need be preengage time slot, then the time slot reservation information generating module is extracted the time slot that timeslot number in the forwarding time slot table is minimum and do not preengage, in the ADS-B of aircraft information itself, this time slot number is added to the reservation timeslot number of aircraft itself, and adds the reservation time slot sign; If this aircraft need discharge time slot, then the 24 bit address sign indicating numbers of this aircraft in the forwarding time slot table to be removed, the time slot reservation information generating module is extracted the timeslot number of the shared time slot of this aircraft from the forwarding time slot table; In the ADS-B information of aircraft own, this time slot number is added to the release timeslot number of aircraft itself, and adds the release time slot sign; The ADS-B information of having added the aircraft of time slot reservation/release information itself is sent to the ADS-B signal projector; If do not need to preengage time slot or discharge time slot, then this method finishes.
In the described step 5, forwarding time slot table update module is upgraded and is comprised the steps:
1. forwarding time slot table update module is extracted the time slot reservation information and the corresponding 24 bit address sign indicating numbers of other aircrafts, judges that whether this aircraft has sent time slot reservation information at last one second; If then the time slot reservation information of this aircraft also will be participated in the renewal of current second forwarding time slot table; Otherwise the time slot reservation information of this aircraft is not participated in the renewal of forwarding time slot table, has only other aircrafts to participate in the renewal of current forwarding time slot table;
2. forwarding time slot table update module is judged the time slot reservation information type of time slot reservation request aircraft; If discharge corresponding time slot state, then forwarding time slot table update module empties the occupied information of certain time slot in the forwarding time slot table; If reservation gap information state, forwarding time slot table more module sort 24 bit address sign indicating numbers of aircraft from small to large;
3. forwarding time slot table update module is that aircraft distributes time slot by the ascending order of 24 bit address sign indicating numbers; The time slot of preengaging when certain airplane then is its distribution time slot during by other aircrafts reservations again after all aircraft time slot reservations are finished;
4. from the current time slot of not preengage or taking, the time slot allocation of choosing the timeslot number minimum is given the aircraft of unallocated time slot to forwarding time slot table update module, finishes until the time slot allocation of all aircrafts by 24 bit address sign indicating numbers order from small to large;
5. preengage or take fully when 32 time slots, and the time slot allocation that still has aircraft imperfect tense, then the uncompleted aircraft delay of these time slot allocation 5 seconds sending time slots subscription information once more.
The effect of the method and apparatus of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention is:
1. the present invention is based on ADS-B blank pipe surveillance technology, make full use of the received ADS-B information of aircraft,, judge the residing state of aircraft according to the positional information of other aircrafts, and, enlarge the monitoring range of aircraft by transmitting the ADS-B information of other aircrafts in due course.
2. the present invention relies on aircraft airborne electronic equipment and satellite navigation receiver fully, does not need to build land station, does not also need satellite that communication link is provided, and is a kind of flight dynamic monitoring scheme with self-organization and collaboration type.Be particularly suitable for the flight under aircraft ocean over strait or the severe environmental conditions.
Description of drawings
Fig. 1 is the limited synoptic diagram of monitoring range of basic ADS-B system;
Fig. 2 is a kind of process synoptic diagram of the ADS-B of expansion monitoring range;
Fig. 3 is the structural drawing of the self-organization aeronautical data communication frame structure of general-purpose accessing transceiver;
Fig. 4 is the process flow diagram of the method for a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Fig. 5 is the system schematic of the device of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Fig. 6 is the information management unit synoptic diagram of the device of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Fig. 7 is the transport information list structure synoptic diagram of the method and apparatus of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Fig. 8 is the aircraft state conversion synoptic diagram of state exchange control module control in the device of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Fig. 9 is the communications management unit structural representation of the device of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Figure 10 is the forwarding time slot list structure synoptic diagram of the method and apparatus of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Figure 11 is the workflow diagram of forwarding time slot table update module of the device of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention.
Figure 12 (a) is the synoptic diagram of reservation time slot of time slot reservation information generating module of the device of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention;
Figure 12 (b) is the synoptic diagram of release time slot of time slot reservation information generating module of the device of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention.
Embodiment
Present invention is described below in conjunction with specific embodiment.
The method of a kind of expansion aircraft surveillance scope based on ADS-B of the present invention as shown in Figure 4, comprises the steps:
Step 1:ADS-B information analysis module and GNSS information analysis module receive ADS-B information and GNSS navigation information respectively, and two-way ADS-B information and GNSS information are resolved.According to the regulation of International Civil Aviation Organization, ADS-B information should meet Asterix CAT21/33 standard, and analysis program will be write according to this standard; After the ADS-B information analysis is finished, can obtain these ADS-B information the information such as 24 bit address sign indicating numbers, longitude and latitude and height, course angle, speed, time of corresponding aircraft.For the GNSS navigational system that adopts gps system, its message meets the gps navigation message standard; GNSS information analysis module is responsible for according to the gps navigation message standard navigation message that is received being resolved.
After step 2:ADS-B information analysis module and GNSS information analysis module parses were finished, ADS-B information extraction modules and GNSS information extraction modules were extracted the information after a part is resolved respectively; The information that the ADS-B information extraction modules is extracted comprises: 24 bit address sign indicating numbers of aircraft, longitude, latitude, highly, speed; The information that the GNSS information extraction modules is extracted comprises: longitude, latitude, height and velocity information; ADS-B information and the GNSS information later of extracting divides two-way to send to transport information table update module respectively.Transport information table update module will be upgraded the transport information table according to ADS-B information and GNSS information.
Step 3: transport information table update module is according to the transport information of this aircraft of this machine GNSS information updating of input, according to the transport information of other aircrafts of ADS-B information updating of other aircrafts.Aircraft from from the longitude that obtains aircraft self the GNSS receiver, latitude, highly, velocity information, and with longitude, latitude and the height of this aircraft in these information updating transport information tables.If the current ADS-B information of receiving other aircrafts of aircraft, the number of the current aircraft with this aircraft communication of transport information table update module according to the ADS-B information acquisition received, from the ADS-B information of other aircrafts of receiving, extract the 24 bit address sign indicating numbers that come top aircraft, longitude, latitude, highly.According to 24 bit address sign indicating numbers of this airplane, whether the above-mentioned information of judging this aircraft is in the transport information table.As shown in Figure 7, be the structure of transport information table: the list item that each classifies the transport information table as, write down 24 bit address sign indicating numbers, longitude, latitude, height and the speed of every airplane.If the above-mentioned information of this airplane in the transport information table, is then upgraded the longitude, latitude of this aircraft, highly; If do not exist, then add a new list item, and with 24 bit address sign indicating numbers, longitude, the latitude of this aircraft, highly write in the list item of new interpolation; Pursue frame and handle the ADS-B information of each aircraft, dispose until whole pending aircrafts.
Step 4: transport information table update module from the transport information table, obtain all aircrafts in the current communication coverage of this aircraft positional information (comprise longitude, latitude, highly, speed) send in the state exchange control module, and obtain the communication covered radius of this aircraft according to the receiver type of aircraft by the state exchange control module; The state exchange control module draws the communication coverage of two airplanes according to longitude, latitude, height and communication covered radius; Judge whether both exist common factor, if common factor arranged, then two airplanes can mutual communication, otherwise two airplanes can not mutual communication.
If exist two airplanes can not mutual communication, if the current general state that is in of this aircraft, the state exchange control module sends indication information to communications management unit: this aircraft have entered subscription state, needs to send subscription information; If aircraft is in subscription state, then aircraft need be according to the forwarding time slot assignment negotiation result of communications management unit, if the success of aircraft time slot allocation then entered forwarding state, otherwise still remains on subscription state, and resend subscription information after 5 seconds; If aircraft is in forwarding state, judge that then aircraft still is in forwarding state.
If two airplanes can mutual communication continue then to judge that other aircrafts whether can mutual communication, calculate up to the communication conditions of all interplanes and finish.
If all aircrafts can both mutual communication, when aircraft is current when being in forwarding state, the state exchange control module sends indication information to communications management unit: aircraft has entered release conditions, needs to send forwarding time slot and discharges information; If aircraft is in release conditions or the current general state that is in of aircraft, judge that then aircraft is in general state.
Step 5: information management unit is sent to communications management unit with the form of formation from information management unit with all ADS-B information.Each formation comprises the ADS-B information of one second aircraft self and all ADS-B information of reception; Comprise a plurality of packets in the formation, each packet is an ADS-B message; Communications management unit at every turn with data reads all in the data queue in the storer of self, prepare these data are sent.State exchange information is not sent to communications management unit by data queue, transmits but transmit interface by state exchange information.
Communications management unit extracts time slot reservation information and corresponding aircraft from the ADS-B information of other aircrafts of data queue 24 bit address sign indicating numbers upgrade the forwarding time slot table; Its concrete steps are as follows:
1. extract 24 bit address sign indicating numbers of time slot reservation information and corresponding aircraft in the ADS-B information of other aircrafts of forwarding time slot table update module.Judge whether this aircraft has sent time slot reservation information at last one second, if then the time slot reservation information of the time slot reservation information of this aircraft and other aircrafts is participated in the renewal of the forwarding time slot table of current this second together; Otherwise the time slot reservation information of having only other aircrafts is participated in the renewal of the forwarding time slot table of current this second.
2. forwarding time slot table update module judges one by one that to every airplane its time slot subscription information is the corresponding time slot of reservation, still discharges corresponding time slot.If discharge corresponding time slot, then " taking/discharge " position with certain time slot in the forwarding time slot table is 0, and 24 bit address sign indicating numbers of the aircraft of this time slot correspondence in the forwarding time slot table are removed.If the reservation gap information then will at first pass through following time slot reservation allocator.Forwarding time slot table update module sorts to aircraft according to the 24 bit address sign indicating numbers order from small to large of aircraft, and 24 bit address sign indicating numbers are little comes the front, the big back that comes.
3. forwarding time slot table update module is carried out first round time slot allocation, distributes time slot preferentially for the little aircraft of 24 bit address sign indicating numbers.The time slot of preengaging when certain airplane is during by other aircrafts reservations, and forwarding time slot table update module is not temporarily distributed time slot to it, is its distribution time slot again after the time slot reservation of waiting for last airplane is finished.
When the time slot reservation request of all aircraft after treatment, first round time slot allocation finishes, forwarding time slot table update module begins to carry out second and takes turns time slot allocation.Forwarding time slot table update module is taken turns second and is given unallocated aircraft distribution time slot to time slot in the first round time slot allocation in the time slot allocation.Forwarding time slot table update module distributes time slot for the aircraft of these unallocated time slots according to 24 bit address sign indicating numbers, and the preferential little aircraft of address code of giving carries out time slot allocation in the time of distribution.When distributing time slot, from the current time slot of not preengage or taking, choose a time slot allocation of timeslot number minimum and give this aircraft.The time slot allocation of all aircrafts is finished, then EOP (end of program).
5. preengage or take fully when 32 time slots, and the time slot allocation that still has aircraft imperfect tense, sending time slots subscription information once more after these aircrafts are waited for 5 seconds.
Step 6: when aircraft needed the sending time slots reservation or the information of release, communications management unit generated time slot reservation/release information according to the forwarding time slot table, and formed frame data transmission with the ADS-B information of aircraft itself.
The time slot reservation information generating module is according to the resulting state exchange information of step 2, when aircraft is converted to subscription state by general state, the time slot reservation information generating module is chosen the reservation time slot of the minimum and unappropriated time slot of timeslot number as this aircraft from the forwarding time slot table, and adds reservation timeslot number and subscription token in the ADS-B of this aircraft information; When aircraft is converted to release conditions by general forwarding state, the state exchange control module is removed " taking/discharge " position and its 24 bit address sign indicating number of the 24 bit address sign indicating number time slot corresponding of this aircraft from the forwarding time slot table, and adds in the ADS-B of this aircraft information and discharge timeslot number and release mark.The ADS-B information of having added the aircraft of time slot reservation/release information itself is sent to the ADS-B signal projector; If do not need to preengage time slot or discharge time slot, then this method finishes.
This method is applicable to general hardware configuration facility, such as the embedded electronic computer system.Provided the typical hardware structured flowchart of realizing this method among Fig. 5.This block diagram mainly comprises three parts: ADS-B transceiver, GNSS receiver and embedded information handling system.Embedded information handling system mainly comprises data-interface, packet parsing scrambler, message handler, storer.Message handler comprises information management unit and communications management unit.Embedded information handling system is a basis of software with embedded OS (as Windows CE, embedded Linux etc.), is hardware foundation with the embedded hardware platform, makes information management unit, communications management unit operate as normal.
Receive the ADS-B information of other aircrafts when the ADS-B transceiver after, the ADS-B transceiver carries out frequency conversion, amplification, AD conversion, verification, decoding with these ADS-B information, ADS-B information after will deciphering is then carried out the message format conversion, formation meets the data message of embedded information handling system bus request, and this part information is sent to embedded information handling system by data-interface.Equally, the GNSS receiver also can be delivered to embedded information handling system by data-interface with the GNSS navigation information.The satellite navigation aerial of GNSS receiver receives the information from Navsat, and the data line by aircraft airborne is sent to embedded information handling system.
Transport information table and forwarding time slot table have been stored in the storer.The transport information table provided all can with the air traffic situation of the aircraft of this aircraft communication; The forwarding time slot table has provided the situation that the forwarding time slot table is utilized.The transport information table is the table of a variable-length, is divided into several data cells in the table, and each data cell comprises 24 bit address sign indicating numbers, longitude, latitude, the elevation information of aircraft.Transport information update module in the message handler can constantly be upgraded the transport information table.When the information of certain airplane has been stored in the transport information table, when then upgrading the transport information of this aircraft, only need longitude, latitude, the elevation information of this aircraft of change; When the information of certain airplane is not stored in the transport information table as yet, then adds a new transport information table, and 24 bit address sign indicating numbers, longitude, latitude, the elevation information of this aircraft added in this table at the end of table.
Data-interface control module control data is in unify the transmission between ADS-B transceiver and the GNSS receiver of embedded information processing system.When the ADS-B data that receive will be when embedded information handling system transmits, the data-interface control module is read in the ADS-B data that received with the control data interface, and GNSS data and the data that send ADS-B are remained on waiting status; When the data transmission that receives ADS-B had been finished, the data-interface control module discharged data-interface and is used for the GNSS Data Receiving and sends the ADS-B data.
The packet parsing scrambler has comprised ADS-B information analysis module and GNSS information analysis module, and ADS-B information analysis module and GNSS information analysis module are resolved the two-way ADS-B information and the GNSS information that receive respectively.The message of ADS-B meets Asterix CAT21 or 33 message specifications, will carry out according to these two message coding standards when resolving the ADS-B message.When being encoded, ADS-B information also to carry out according to these two message coding standards.What the GNSS information in specific embodiment adopted is the gps satellite navigational system, and its message meets the gps navigation message standard, also should carry out according to the gps navigation message standard its parsing.
Comprise information management unit and communications management unit in the message handler.Information management unit comprises ADS-B information extraction modules, GNSS information extraction modules, transport information update module and state exchange control module.Communications management unit comprises time slot reservation update module and time slot reservation information generating module.Message handler by ADS-B information extraction modules and GNSS information extraction modules after the packet parsing scrambler is resolved ADS-B information and GNSS information extract part ADS-B information and GNSS information; Information after transport information update module and the utilization of state exchange control module are extracted upgrades and generates the state exchange information of aircraft to the transport information table in the storer.Time slot reservation update module in the communications management unit is upgraded the forwarding time slot table in the storer according to the time slot reservation information in the reception ADS-B information; After the forwarding time slot table upgrades and finishes, generate the time slot reservation information of this aircraft according to state exchange information by the time slot reservation information generating module.
Described information management unit comprises ADS-B information analysis module, ADS-B information extraction modules, transport information table update module, state exchange control module, GNSS information analysis module and GNSS information extraction modules as shown in Figure 6.ADS-B information analysis module and GNSS information analysis module are resolved the two-way ADS-B information and the GNSS information that receive respectively; ADS-B information extraction modules and GNSS information extraction modules are extracted the information after a part is resolved respectively and this part information are input to transport information table update module respectively the transport information table in the storer is upgraded, and obtain the transport information table in the up-to-date moment; The state exchange control module obtains the state exchange information of aircraft according to up-to-date transport information table, and the state exchange information that obtains is passed to communications management unit.Simultaneously, the ADS-B information that aircraft received will be delivered to communications management unit by data queue.
Described transport information table update module is responsible for the transport information table is upgraded.The number of the current aircraft with this aircraft communication according to the ADS-B information acquisition received of transport information table update module extracts the 24 bit address sign indicating numbers that come top aircraft, longitude, latitude, highly then from these ADS-B information.According to 24 bit address sign indicating numbers of this airplane, judge that this machine is whether in the transport information table.As shown in Figure 7, be the structure of transport information table: the list item that each classifies the transport information table as, write down the 24 bit address sign indicating numbers, longitude, latitude of every airplane, highly.If the above-mentioned information of this airplane in the transport information table, is then upgraded the longitude, latitude of this aircraft, highly; If do not exist, then add a new list item, and with 24 bit address sign indicating numbers, longitude, the latitude of this aircraft, highly write in the list item of new interpolation; Pursue frame and handle the ADS-B information of each aircraft, dispose until whole pending aircrafts.
The state exchange of described state exchange control module as shown in Figure 8.The state exchange control module is divided into four kinds of states with aircraft, and has provided the transformational relation between the one of four states.The one of four states of aircraft is general state, subscription state, forwarding state and release conditions in the state exchange control module.Aircraft is under the general state usually, and promptly aircraft is not transmitted the ADS-B information of other aircrafts, only receives the ADS-B information of other aircrafts and sends the ADS-B information of this aircraft.When this aircraft found to exist in its monitoring range two airplanes to intercom mutually by calculating, then this aircraft need be preengage the ADS-B information that time slot is transmitted other aircrafts; This aircraft is in subscription state when the reservation time slot.After this aircraft reservation time slot success, aircraft is converted to forwarding state by subscription state, otherwise aircraft still is in subscription state.If aircraft is in forwarding state, when can both mutual communication between any two airplanes in the aircraft surveillance scope, then this airplane no longer needs to transmit the ADS-B information of other aircrafts, and aircraft need discharge its shared time slot, and this moment, aircraft entered release conditions by forwarding state; Aircraft need send the release gap information when release conditions.When aircraft will discharge gap information send finish after, enter general state.
Described communications management unit comprises forwarding time slot table update module, time slot reservation information generating module as shown in Figure 9.Communications management unit is responsible for according to obtaining time slot reservation information in the ADS-B information of aircraft from the data queue of information management unit output, and the forwarding time slot table upgrades in time; The time slot reservation information generating module is called time slot reservation/release information that up-to-date forwarding time slot table that the time slot update module obtains and aircraft state conversion controling information generate this aircraft, at last the ADS-B information that generates is sent to the ADS-B transceiver.
Described forwarding time slot table as shown in figure 10, it has provided 32 occupied situations of forwarding time slot, this table constantly upgrades the situation that takies of 32 time slots according to the ADS-B information of other aircrafts that current aircraft is received, in time reflects the occupied situation of forwarding time slot.This table comprises 32 unit, and timeslot number has been stored in each unit, 24 bit address sign indicating numbers of the sign that takies/discharge, shared aircraft.When certain time slot is occupied, such as time slot 1, then take in the time slot 1/release mark will put 1; Simultaneously, the 24 bit address sign indicating numbers that take the aircraft of this time slot also can be write in the 24 bit address sign indicating numbers in the unit.If certain time slot is released or unoccupied, then the taking of this time slot/release mark will be put 0, and 24 bit address sign indicating numbers also will empty simultaneously.The renewal of forwarding time slot table is to finish according to the ADS-B information of other received aircrafts of this aircraft.The order of arranging each aircraft time slot reservation according to 24 bit address sign indicating numbers size during renewal distributes time slot preferentially for the little aircraft of 24 bit address sign indicating numbers; When the time slot reservation request of certain airplane is not being met, then this airplane need be after 5 seconds sending time slots subscription information once more.
Described forwarding time slot table update module process flow diagram as shown in figure 11, if this aircraft has sent time slot reservation information at last one second, then the time slot reservation information of this aircraft also will be participated in the renewal of the forwarding time slot table of current this second; Otherwise the time slot reservation information of having only other received aircrafts of this aircraft is participated in the time slot of current this second and is upgraded.Then forwarding time slot table update module is judged its time slot subscription information type one by one to the aircraft with time slot reservation request; If discharge the time slot request, then forwarding time slot table update module empties the occupied information of certain time slot in the forwarding time slot table, judges then whether time slot reservation/release the request of all aircrafts disposes.If reservation time slot request, forwarding time slot table update module will be at first 24 bit address sign indicating numbers of aircraft are sorted from small to large, judge then time slot reservation/releases of all aircrafts asks whether to dispose.If the time slot reservation of all aircrafts/releases request is untreated and is finished, then forwarding time slot table update module continues the time slot reservation information type of next airplane of judgement, finishes until the reservation/release information processing of all aircrafts.The occupied information of all time slots that need discharge is cleared in the forwarding time slot table then if reservation/the releases information processing of all aircrafts finishes, and needs the 24 bit address sign indicating numbers ordering of reservation time slot aircraft to finish, and needs below to handle preengaging the time slot request.Forwarding time slot table update module is according to the reservation time slot request of ascending each reservation time slot aircraft of sequential processes of 24 bit address sign indicating numbers.When forwarding time slot table update module is handled the reservation time slot request of certain airplane, judge at first whether the time slot that this aircraft preengages is shared by other aircrafts.If then this airplane is waited for after the reservation time slot Request Processing of all aircrafts is finished and is carried out time slot allocation again.If not then forwarding time slot table update module is set to the time slot of this aircraft reservation to take in the forwarding time slot table, and 24 bit address sign indicating numbers of this aircraft are added in the corresponding time slot of forwarding time slot table.The reserve requests that all will judge whether all aircrafts after the time slot reservation Request Processing of every airplane is finished is finished dealing with, the then time slot reservation request of next airplane of forwarding time slot table update module continuation processing if not is if then forwarding time slot table update module judges whether to exist the still unallocated time slot of aircraft.If there is not the still unallocated time slot of aircraft, then the forwarding time slot table upgrades and finishes; If there is the still unallocated time slot of aircraft, then forwarding time slot table update module sorts the aircraft of all unallocated time slots from small to large according to 24 bit address sign indicating numbers, and unappropriated time slot in 32 forwarding time slots is distributed to these aircrafts from small to large one by one.After 32 time slots all have been assigned with, forwarding time slot table update module judges whether to exist the still unallocated time slot of aircraft, if then the aircraft of unallocated time slot resends the time slot reservation request after waiting for 5 seconds, this airplane was participated in the renewal process of forwarding time slot table again after 5 seconds; Then the forwarding time slot table upgrades end if not.
Described time slot reservation information generating module is shown in Figure 12 (a), 12 (b), and aircraft is judged state under this aircraft according to state exchange information; If 24 bit address sign indicating numbers of aircraft are abc in the present embodiment, when it need preengage time slot, as shown in Figure 12 (a), then the time slot reservation information generating module is extracted the time slot that timeslot number in the forwarding time slot table is minimum and do not preengage, timeslot number is 8 timeslot number minimum in the forwarding time slot table, and this time slot is unoccupied, is idle condition, then Dui Ying " taking/discharge " place value is that 0,24 bit address code value is NULL; It is 1 that the time slot reservation information generating module will " take/discharge " position, and the 24 bit address sign indicating numbers of this aircraft is written to 24 bit address sign indicating numbers of time slot 8 correspondences in the forwarding time slot table; In the ADS-B information that generates, the reservation timeslot number is the time slot corresponding number 8 in the forwarding time slot table, and subscription token is changed to 1.If 24 bit address sign indicating numbers of aircraft are abc in the present embodiment, when it need discharge time slot, shown in Figure 12 (b), then " taking/discharge " place value of its time slot that takies 8 is that 1,24 bit address code value is abc; The time slot reservation information generating module changes to NULL with the 24 bit address sign indicating number abc of this aircraft in the forwarding time slot table, and will " to take/discharge " position be 0; The time slot reservation information generating module is extracted the timeslot number 8 of the shared time slot of this aircraft from the forwarding time slot table, and this time slot number 8 is added to the release timeslot number of aircraft itself in the ADS-B information of aircraft own, and interpolation release time slot sign is changed to 0.With the ADS-B information of aircraft itself of having added time slot reservation/release information by the packet parsing scrambler to ADS-B information coding, and the ADS-B information after will encode by data-interface sends to the ADS-B transceiver and carries out the ADS-B signal and launch; If aircraft does not need to preengage time slot or discharges time slot, then there is not aforementioned process.
Claims (5)
1, a kind of device of the expansion aircraft surveillance scope based on ADS-B comprises information management unit and communications management unit; Information management unit carries out analyzing and processing after the ADS-B information and the GNSS navigation information that receive are resolved, extracted, upgrade the transport information table, the state exchange information that draws is delivered to communications management unit by interface, and the ADS-B information that generates is put into data queue is delivered to communications management unit; Communications management unit upgrades the forwarding time slot table and the forwarding time slot table that calls after the renewal according to state exchange information generates time slot reservation/release information, and the ADS-B information of aircraft itself sends to the ADS-B signal transceiver the most at last;
Described information management unit comprises ADS-B information analysis module, ADS-B information extraction modules, GNSS information analysis module, GNSS information extraction modules and state exchange control module, it is characterized in that, also comprises transport information table update module; ADS-B information analysis module and GNSS information analysis module are resolved the two-way ADS-B information and the GNSS information that receive respectively; ADS-B information extraction modules and GNSS information extraction modules are extracted the information after a part is resolved respectively and are input to transport information table update module respectively and be used to upgrade the transport information table; Transport information table update module by the input parsing after part A DS-B information and part GNSS information the air traffic situation that current aircraft obtained is upgraded; The state exchange control module is called the transport information table and is passed through this machine residing state of next second of computational discrimination of each aircraft coverage, by interface state exchange information is passed to communications management unit; Simultaneously, the ADS-B information of generation is also put into data queue and is delivered to communications management unit;
Described transport information table update module is upgraded the transport information table according to the ADS-B information that is received; When handling the transport information of every airplane, transport information table update module at first extracts 24 bit address sign indicating numbers of this aircraft, and judge according to 24 bit address sign indicating numbers whether the transport information of this aircraft has been present in the transport information table, if then only need the transport information of this aircraft is upgraded; If not, then need add a new list item at the end of transport information table, and with 24 bit address sign indicating numbers of this aircraft, longitude, latitude, highly, speed adds in list item;
Described communications management unit is made up of forwarding time slot table update module, time slot reservation information generating module; Forwarding time slot table update module is extracted time slot reservation information and corresponding aircraft from the ADS-B information of other aircrafts 24 bit address sign indicating numbers upgrade the forwarding time slot table, the time slot reservation information generating module is selected corresponding time slot in the forwarding time slot table, preengage or discharge, and relevant information is formed a data with the ADS-B information of this aircraft send;
Described forwarding time slot table update module is responsible for the forwarding time slot table is upgraded, and obtains the situation that takies of up-to-date forwarding time slot table; Forwarding time slot table update module determines that at first the forwarding time slot table of participating in current second upgrades the number of aircraft, judges its time slot subscription information type one by one to the every airplane with time slot reservation request then; If discharge corresponding time slot, then forwarding time slot table updating block empties the occupied information of certain time slot in the forwarding time slot table; If reservation gap information, forwarding time slot table updating block will be are at first sorted from small to large according to 24 bit address sign indicating numbers of aircraft; The preferential little aircraft of 24 bit address sign indicating numbers of giving distributes time slot; The time slot of preengaging when certain airplane is during by other aircrafts reservations, is its distribution time slot again after the time slot reservation of then waiting for last airplane is finished; After first round time slot allocation finishes, press 24 bit address sign indicating numbers again, from the current time slot of not preengage or taking, choose the time slot allocation of timeslot number minimum and give this aircraft from little extremely big order; When the time slot allocation that still has aircraft imperfect tense, sending time slots subscription information once more after then the uncompleted aircraft of these time slot allocation is waited for 5 seconds, and participate in time slot reservation and distribute;
In the described time slot reservation information generating module, if this aircraft need be preengage time slot, then in the forwarding time slot table after renewal, the time slot reservation information generating module is selected a time slot of timeslot number minimum, its timeslot number as aircraft itself reservation is added in the ADS-B information of this aircraft, and will preengage time slot sign and be made as 1; If this aircraft need discharge time slot, then in the forwarding time slot table that renewal finishes, the time slot reservation information generating module is selected this aircraft 24 bit address sign indicating number time slot corresponding, with its removing, and the timeslot number of being removed is added in the ADS-B information of this aircraft, will discharge time slot sign simultaneously and be made as 0.
2, according to the device of the described a kind of expansion aircraft surveillance scope based on ADS-B of claim 1, it is characterized in that: each classifies a list item of transport information table as in the described transport information table, writes down 24 bit address sign indicating numbers, longitude, latitude, height and the speed of every airplane; The length of transport information table is according to the variation how much length takes place of received ADS-B information.
3, according to the device of the described a kind of expansion aircraft surveillance scope based on ADS-B of claim 1, it is characterized in that: described forwarding time slot table is made up of 32 unit, 32 occupied situations of forwarding time slot have been represented, this table constantly upgrades the situation that takies of 32 time slots according to the ADS-B information of other aircrafts that current aircraft is received, in time reflects the occupied situation of time slot; This shows 24 bit address sign indicating numbers of the sign of having stored timeslot number, having taken/discharge in each unit, shared aircraft.
4, a kind of method of the expansion aircraft surveillance scope based on ADS-B is characterized in that, comprises the steps:
Step 1:: ADS-B information analysis module in the information management unit and GNSS information analysis module receive ADS-B information and GNSS navigation information respectively, respectively ADS-B information and GNSS navigation information are resolved, obtain 24 bit address sign indicating numbers, longitude and latitude and height, course angle, speed, the temporal information of each aircraft;
Step 2:: ADS-B information extraction modules in the information management unit extract 24 bit address sign indicating numbers after resolving, longitude, latitude, highly, speed; : the GNSS information extraction modules in the information management unit is extracted longitude, latitude, height and the velocity information after resolving; ADS-B information after ADS-B information extraction modules and GNSS information extraction modules will be extracted and GNSS navigation information divide two-way to send to transport information table update module in the information management unit respectively;
Step 3: the transport information table update module in the information management unit is according to the positional information of this machine of GNSS information updating; If the current ADS-B information of receiving other aircrafts of aircraft, transport information table update module then from the ADS-B information of other aircrafts of receiving, are extracted the 24 bit address sign indicating numbers that come the most preceding aircraft, judge that this machine is whether in the transport information table; If, then upgrade the longitude, latitude of this aircraft, highly; If do not exist, then with 24 bit address sign indicating numbers, longitude, the latitude of this aircraft, highly write in the list item of new interpolation; Pursue frame and handle the ADS-B information of each aircraft, dispose until whole pending aircrafts;
Step 4: transport information table update module sends to the positional information of all aircrafts in the current communication coverage of this aircraft in the state exchange control module, calculates the communication coverage of two airplanes according to longitude, latitude, altitude gauge; Judge the communication coverage of all interplanes in pairs with the account form of combination, generate state exchange information according to the communication coverage condition that obtains;
The ADS-B information that step 5:ADS-B information analysis module parses goes out is sent to communications management unit from information management unit; State exchange information transmits interface by state exchange information and transmits; The forwarding time slot table update module of communications management unit is extracted time slot reservation information and corresponding aircraft from the ADS-B information of other aircrafts of data queue 24 bit address sign indicating numbers upgrade the forwarding time slot table;
Step 6: the time slot reservation information generating module of communications management unit is judged state under this aircraft according to state exchange information; If this aircraft need be preengage time slot, then the time slot reservation information generating module is extracted the time slot that timeslot number in the forwarding time slot table is minimum and do not preengage, in the ADS-B of aircraft information itself, this time slot number is added to the reservation timeslot number of aircraft itself, and adds the reservation time slot sign; If this aircraft need discharge time slot, then the 24 bit address sign indicating numbers of this aircraft in the forwarding time slot table to be removed, the time slot reservation information generating module is extracted the timeslot number of the shared time slot of this aircraft from the forwarding time slot table; In the ADS-B information of aircraft own, this time slot number is added to the release timeslot number of aircraft itself, and adds the release time slot sign; The ADS-B information of having added the aircraft of time slot reservation/release information itself is sent to the ADS-B signal projector; If do not need to preengage time slot or discharge time slot, then this method finishes.
5, according to the method for the described a kind of expansion aircraft surveillance scope based on ADS-B of claim 4, it is characterized in that: in the described step 5, forwarding time slot table update module is upgraded and is comprised the steps:
1). forwarding time slot table update module is extracted the time slot reservation information and the corresponding 24 bit address sign indicating numbers of other aircrafts, judges that whether this aircraft has sent time slot reservation information at last one second; If then the time slot reservation information of this aircraft also will be participated in the renewal of current second forwarding time slot table; Otherwise the time slot reservation information of this aircraft is not participated in the renewal of forwarding time slot table, has only other aircrafts to participate in the renewal of current forwarding time slot table;
2). forwarding time slot table update module is judged the time slot reservation information type of time slot reservation request aircraft; If discharge corresponding time slot state, then forwarding time slot table update module empties the occupied information of certain time slot in the forwarding time slot table; If reservation gap information state, forwarding time slot table more module sort 24 bit address sign indicating numbers of aircraft from small to large;
3). forwarding time slot table update module is that aircraft distributes time slot by the ascending order of 24 bit address sign indicating numbers; The time slot of preengaging when certain airplane then is its distribution time slot during by other aircrafts reservations again after all aircraft time slot reservations are finished;
4). from the current time slot of not preengage or taking, the time slot allocation of choosing the timeslot number minimum is given the aircraft of unallocated time slot to forwarding time slot table update module, finishes until the time slot allocation of all aircrafts by 24 bit address sign indicating numbers order from small to large;
5). when 32 time slots are preengage or taken fully, and the time slot allocation that still has aircraft is imperfect tense, then the uncompleted aircraft delay of these time slot allocation 5 seconds sending time slots subscription information once more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101180612A CN100557659C (en) | 2008-08-07 | 2008-08-07 | A kind of method and apparatus of the expansion aircraft surveillance scope based on ADS-B |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101180612A CN100557659C (en) | 2008-08-07 | 2008-08-07 | A kind of method and apparatus of the expansion aircraft surveillance scope based on ADS-B |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101334936A true CN101334936A (en) | 2008-12-31 |
| CN100557659C CN100557659C (en) | 2009-11-04 |
Family
ID=40197515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008101180612A Expired - Fee Related CN100557659C (en) | 2008-08-07 | 2008-08-07 | A kind of method and apparatus of the expansion aircraft surveillance scope based on ADS-B |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100557659C (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587652B (en) * | 2009-06-10 | 2011-01-19 | 民航数据通信有限责任公司 | Incomplete observation based information processing method and system |
| CN101630445B (en) * | 2009-06-10 | 2011-05-18 | 民航数据通信有限责任公司 | Method for processing data of asynchronous multiple sensors based on noise error and system thereof |
| CN101646258B (en) * | 2009-09-11 | 2011-05-18 | 北京航空航天大学 | Data chain channel allocating method for automatic formation of unmanned air vehicle |
| CN102186145A (en) * | 2011-05-04 | 2011-09-14 | 西安电子科技大学 | Geographical position and speed information based aerial high-speed self-organization routing method |
| CN102510482A (en) * | 2011-11-29 | 2012-06-20 | 蔡棽 | Image splicing reconstruction and overall monitoring method for improving visibility and visual distance |
| CN103152574A (en) * | 2013-03-15 | 2013-06-12 | 清华大学 | Remote sensing image transmitting system with limited velocity based on feature registration |
| CN104579391A (en) * | 2015-02-06 | 2015-04-29 | 合肥戎科信息技术开发有限公司 | Ads-b receiver module |
| CN104898142A (en) * | 2015-06-24 | 2015-09-09 | 河北科技大学 | Monitoring device and method thereof for operation state of aircraft or site vehicle |
| CN107657838A (en) * | 2017-10-10 | 2018-02-02 | 中国民航大学 | The extracting method of parameter index in a kind of transport air flow characteristic parameter index system |
| CN108418610A (en) * | 2018-03-29 | 2018-08-17 | 中国人民解放军国防科技大学 | Satellite-borne ADS-B self-adaptive beam forming method and device |
| CN108648508A (en) * | 2018-02-11 | 2018-10-12 | 中国民用航空中南地区空中交通管理局 | A kind of conversion method, system, electronic equipment and the storage medium of multi-channel A/D S-B data |
| CN109559568A (en) * | 2018-12-14 | 2019-04-02 | 中电科（德阳广汉）特种飞机系统工程有限公司 | Blank pipe method, apparatus, system and the readable storage medium storing program for executing of navigation aircraft |
| CN110032666A (en) * | 2019-03-05 | 2019-07-19 | 上海卫星工程研究所 | Particular aircraft target based on history ADS-B selects method |
| CN111882927A (en) * | 2020-07-03 | 2020-11-03 | 中国民用航空总局第二研究所 | 1090ES link ADS-B technology-based command operation management system and method |
| CN112634663A (en) * | 2020-12-08 | 2021-04-09 | 成都福瑞空天科技有限公司 | General aviation flight plan and monitoring target association system and method |
| CN112713949A (en) * | 2020-11-10 | 2021-04-27 | 中国人民解放军海军航空大学航空作战勤务学院 | TTNT data chain channel load statistical method |
| CN114049796A (en) * | 2021-11-09 | 2022-02-15 | 中国电子科技集团公司第二十八研究所 | Method for directionally transmitting ADS-B broadcast signal |
-
2008
- 2008-08-07 CN CNB2008101180612A patent/CN100557659C/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587652B (en) * | 2009-06-10 | 2011-01-19 | 民航数据通信有限责任公司 | Incomplete observation based information processing method and system |
| CN101630445B (en) * | 2009-06-10 | 2011-05-18 | 民航数据通信有限责任公司 | Method for processing data of asynchronous multiple sensors based on noise error and system thereof |
| CN101646258B (en) * | 2009-09-11 | 2011-05-18 | 北京航空航天大学 | Data chain channel allocating method for automatic formation of unmanned air vehicle |
| CN102186145B (en) * | 2011-05-04 | 2013-08-14 | 西安电子科技大学 | Geographical position and speed information based aerial high-speed self-organization routing method |
| CN102186145A (en) * | 2011-05-04 | 2011-09-14 | 西安电子科技大学 | Geographical position and speed information based aerial high-speed self-organization routing method |
| CN102510482A (en) * | 2011-11-29 | 2012-06-20 | 蔡棽 | Image splicing reconstruction and overall monitoring method for improving visibility and visual distance |
| CN103152574A (en) * | 2013-03-15 | 2013-06-12 | 清华大学 | Remote sensing image transmitting system with limited velocity based on feature registration |
| CN103152574B (en) * | 2013-03-15 | 2016-01-20 | 清华大学 | The remote sensing images transmission system of the rate-constrained of feature based registration |
| CN104579391A (en) * | 2015-02-06 | 2015-04-29 | 合肥戎科信息技术开发有限公司 | Ads-b receiver module |
| CN104898142A (en) * | 2015-06-24 | 2015-09-09 | 河北科技大学 | Monitoring device and method thereof for operation state of aircraft or site vehicle |
| CN104898142B (en) * | 2015-06-24 | 2018-04-10 | 河北科技大学 | The supervision equipment and its method of a kind of aircraft or place travel condition of vehicle |
| CN107657838A (en) * | 2017-10-10 | 2018-02-02 | 中国民航大学 | The extracting method of parameter index in a kind of transport air flow characteristic parameter index system |
| CN108648508A (en) * | 2018-02-11 | 2018-10-12 | 中国民用航空中南地区空中交通管理局 | A kind of conversion method, system, electronic equipment and the storage medium of multi-channel A/D S-B data |
| CN108418610A (en) * | 2018-03-29 | 2018-08-17 | 中国人民解放军国防科技大学 | Satellite-borne ADS-B self-adaptive beam forming method and device |
| CN108418610B (en) * | 2018-03-29 | 2020-05-08 | 中国人民解放军国防科技大学 | Satellite-borne ADS-B self-adaptive beam forming method and device |
| CN109559568A (en) * | 2018-12-14 | 2019-04-02 | 中电科（德阳广汉）特种飞机系统工程有限公司 | Blank pipe method, apparatus, system and the readable storage medium storing program for executing of navigation aircraft |
| CN110032666A (en) * | 2019-03-05 | 2019-07-19 | 上海卫星工程研究所 | Particular aircraft target based on history ADS-B selects method |
| CN110032666B (en) * | 2019-03-05 | 2022-03-18 | 上海卫星工程研究所 | Specific airplane target selection method based on historical ADS-B |
| CN111882927A (en) * | 2020-07-03 | 2020-11-03 | 中国民用航空总局第二研究所 | 1090ES link ADS-B technology-based command operation management system and method |
| CN112713949A (en) * | 2020-11-10 | 2021-04-27 | 中国人民解放军海军航空大学航空作战勤务学院 | TTNT data chain channel load statistical method |
| CN112713949B (en) * | 2020-11-10 | 2022-04-26 | 中国人民解放军海军航空大学航空作战勤务学院 | TTNT data chain channel load statistical method |
| CN112634663A (en) * | 2020-12-08 | 2021-04-09 | 成都福瑞空天科技有限公司 | General aviation flight plan and monitoring target association system and method |
| CN114049796A (en) * | 2021-11-09 | 2022-02-15 | 中国电子科技集团公司第二十八研究所 | Method for directionally transmitting ADS-B broadcast signal |
| CN114049796B (en) * | 2021-11-09 | 2022-08-16 | 中国电子科技集团公司第二十八研究所 | Method for directionally transmitting ADS-B broadcast signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100557659C (en) | 2009-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100557659C (en) | A kind of method and apparatus of the expansion aircraft surveillance scope based on ADS-B | |
| CN100466014C (en) | System for monitoring moving target on place of aerodrome | |
| CA2829817C (en) | Satellite communication network | |
| CN100517413C (en) | ADS-B control workstation data processing system | |
| EP0592560B1 (en) | A position indicating system | |
| CN106341176B (en) | A kind of multiservice system based on multi-service ADS-B combined floor station owner's machine equipment | |
| CA2555164A1 (en) | Automatic method for transmitting monitoring alarms from an aircraft to the ground | |
| CN103178999B (en) | A kind of ADS-B method of data capture | |
| CN113433975B (en) | Method and system for taking off and landing unmanned aerial vehicle airport by unmanned aerial vehicle | |
| CN101276379B (en) | UAT data chain OPNET simulation model related to ADS-B | |
| CN104575109A (en) | Signal processing method of transmitting link of ADS-B system, and dev implementation ice | |
| CN101170561A (en) | A performance simulation model for 1090MHzADS-B system in OPNET | |
| CN102621567B (en) | Automatic dependent surveillance-broadcast (ADS-B) airborne equipment with beidou function and beidou function starting and stopping method | |
| Duan et al. | ADS-B feasibility study for commercial space flight operations | |
| US10650688B1 (en) | Air traffic situational awareness using HF communication | |
| Ercetin et al. | Next generation satellite systems for aeronautical communications | |
| US20080192693A1 (en) | Method and Device for Determination of an Address Within an Aeronautical Telecommunication Network | |
| CN115209358B (en) | Method, apparatus and storage medium for transmitting auto-correlation monitoring broadcast information | |
| RU68212U1 (en) | RADIO COMMUNICATION SYSTEM WITH MOBILE OBJECTS | |
| Li et al. | ADS‐B aided robust relay selection for cooperative communications in aircraft approach | |
| Tan et al. | Surveillance Application Analysis of Beihang Aviation Satellite-1 | |
| Robinson | Dual purpose simulation: new data link test and comparison with VDL-2 | |
| Zavalishin et al. | Implementation and Ways to Implement ADS-B in Russian Federation | |
| White | Air-ground communications: history and expectations | |
| CN117636695A (en) | Unmanned aerial vehicle airspace monitoring device and method based on ADS-B technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20190807 |