CN105527623A - Network-type sea surveillance system and method based on air traffic control radar - Google Patents
Network-type sea surveillance system and method based on air traffic control radar Download PDFInfo
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- CN105527623A CN105527623A CN201510996412.XA CN201510996412A CN105527623A CN 105527623 A CN105527623 A CN 105527623A CN 201510996412 A CN201510996412 A CN 201510996412A CN 105527623 A CN105527623 A CN 105527623A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
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Abstract
The invention discloses a network-type sea surveillance system and method based on air traffic control radar. The system comprises an air traffic control radar network, a plurality of user terminals, a sea surveillance central processing unit and an upper computer; a radar node comprises an antenna, a transceiving assembly, an up/down-converter, an intermediate frequency transceiving exciter, an aerial target processor, a data acquisition device and a sea surface target processor. After the air traffic control radar receives radar signals, the data acquisition device processes data from the intermediate frequency transceiving exciter, and converts the radar signals to the format which can be identified by the sea surface target processor; the sea surface target processor detects a target point, sends the data of the air traffic control radar to the sea surveillance central processing unit, generates locus points by integrating data, establishes a target tracking locus diagram, and sends the target tracking locus diagram to the user terminals according to the requirements of the user terminals. The system and the method can realize complex sea environment surveillance with relatively low cost.
Description
Technical field
The present invention relates to radar monitoring field, be specifically related to a kind of network type sea surveillance system based on air traffic control radar and method.
Background technology
The Shipboard Radar System of continental rise is made up of various advanced sea surveillance system, these radar systems are all be operated on S or X-band, and great majority belong to the non-coherent radar that machinery rotates, be just that non-coherent pulse signalf makes them can not do the process of Doppler effect, thus causing them to be more easily subject to the impact of sea and ground clutter.The emissive power of these radars is less than 1 kilowatt substantially, can only detect and trace into the larger ship of volume or object.Compared with the radar of high-power full coherent, the radar of the non-coherent of these low-power has very large price advantage, and therefore they can be widely used in boats and ships very much, on shore line and oil well.Traditional marine radar is not also suitable for harbour safety check and infrastructure is protected, and these places exactly need to monitor little object and contact ship situation.The radar of high-power full coherent can meet this demand, but at equipment purchasing, maintenance and technical support need a large amount of investments.On the other hand, the signal that full phase parameter radar utilizes Doppler effect process to reflect, can eliminate noise jamming like this, thus greatly improve the detection performance of radar.But such radar is very expensive, need to drop into a large amount of capital expenditure, as control tower and relevant auxiliary facility.
Air traffic control radar is used for continuing detection and following the tracks of various aerial object to reach the object of control air traffic.In many countries having shore line, airport is mainly built on the shore line adjoined with main cities.Area control radar system also correspondingly build the territorial sky that airport is got on to cover in limit, shore line in.These full phase parameter radars are operated in S-band, and power can up to 10KW.Air traffic control radar can receive the reflection wave of terrain object and aerial target simultaneously, but due to terrain object be not that air control system is paid close attention to and is taken as clutter and eliminates.Such as, but other mechanisms, harbour management office, sea police department and aim at the national security community etc. monitoring potential threat public infrastructure, but pay special attention to for these terrain object.These terrain object can be used for the activity of detection potential threat, comprise sea state, illegal immigrant, Traffic in Narcotic Drugs, illegal fishing, smuggling and pirate.Want to detect very little ship in the marine environment of complexity, sea surveillance system needs to configure medium or high-power full phase parameter radar.
In sum, as how relatively low cost realizes the supervision to the marine environment of complexity, be problem demanding prompt solution.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of network type sea surveillance system based on air traffic control radar and method, utilizing the supervision that cost that this method can be relatively low realizes the marine environment of complexity.
To achieve these goals, the technical solution used in the present invention is: a kind of network type sea surveillance system based on air traffic control radar, comprise several radar nodes, each radar node comprises by a PC control and the antenna connected successively, transmitting-receiving subassembly, Up/Down Conversion device and medium-frequency receiving and sending driver, it is characterized in that: the output terminal of described medium-frequency receiving and sending driver is connected with data intake device, the output terminal of described data intake device is connected with sea-surface target processor.
Further, some radar nodes connect successively, and form air traffic control radar netting, air traffic control radar netting is connected with a sea surveillance system central processing unit by the Internet.
Further, a kind of network type sea surveillance system based on air traffic control radar, also comprise some user terminals, described user terminal is connected with sea surveillance system central processing unit by the Internet.
Further, a kind of network type sea surveillance system based on air traffic control radar, also comprise a targets in ocean display module, described targets in ocean display module is connected with sea-surface target processor, and the output terminal of described medium-frequency receiving and sending driver is also connected with aerial target processor and aerial target display module in turn.
To achieve these goals, the technical solution used in the present invention is: a kind of network type sea survaillance method based on air traffic control radar, specifically comprises the following steps:
1) each radar node accepts radar signal by antenna, transmitting-receiving subassembly, Up/Down Conversion device and medium-frequency receiving and sending driver successively;
2) data intake device receives and processes the data from medium-frequency receiving and sending driver;
3) data intake device is converted to the discernible form of sea-surface target processor the radar signal received;
4) sea-surface target processor receives and processes the data from data intake device, impact point detected;
5) data of all single radar nodes are sent to sea surveillance system central processing unit;
6) data of all radar nodes in air traffic control radar netting integrated by sea surveillance system central processing unit, generate tracing point, and set up target following trajectory diagram according to impact point;
7) sea surveillance system central processing unit is according to the demand of user terminal, and target following trajectory diagram is sent to user terminal.
Further, in described step 1), described host computer, according to actual conditions, controls specific radar node, scans specific region, and receiving radar signal.
Further, described step 2) in, the data handling procedure of data intake device comprises correction of data and loses or error in data, or abandons these correction of datas loss or error in data, low beam data is extracted simultaneously.
Further, in described step 4), the data handling procedure of sea-surface target processor comprises eliminates clutter and external disturbance.
Further, in described step 5), the data of single radar node, first through fire wall and safety encipher process, re-send to sea surveillance system central processing unit.
Further, the data layout of described sea surveillance system central processing unit supports the data layout that NMEA form or any state security department require.
The invention has the beneficial effects as follows: a kind of network type sea surveillance system based on air traffic control radar and method, control specific radar node by sea surveillance system central processing unit and carry out radar signal reception, through data picked-up and Data Integration, set up target following trajectory diagram, can with the supervision of relatively low cost realization to the marine environment of complexity.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is marine site of the present invention monitoring process flow diagram;
Fig. 2 is the structural drawing that each radar node of the present invention is converted to sea surveillance system;
Fig. 3 is the structural drawing of network type sea surveillance system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details:
With reference to accompanying drawing 2 and accompanying drawing 3, the present invention proposes a kind of network type sea surveillance system based on air traffic control radar and method, its system comprises several radar nodes, each radar node comprises by a PC control and the antenna 11 connected successively, transmitting-receiving subassembly 12, Up/Down Conversion device 13 and medium-frequency receiving and sending driver 14, it is characterized in that: the output terminal of described medium-frequency receiving and sending driver 14 is connected with data intake device 16, the output terminal of described data intake device 16 is connected with sea-surface target processor 17; Some radar nodes connect successively, and form air traffic control radar netting 1, air traffic control radar netting 1 is connected with a sea surveillance system central processing unit 3 by the Internet; Network type sea surveillance system, also comprises some user terminals 2, and described user terminal 2 is connected with sea surveillance system central processing unit 3 by the Internet; In addition, also comprise a targets in ocean display module 4(and be suitable for NMEA agreement), described targets in ocean display module 4 is connected with sea-surface target processor 17, and the output terminal of described medium-frequency receiving and sending driver 14 is also connected with aerial target processor 15 in turn and aerial target display module 5(is suitable for ASTERIX agreement).The air traffic control radar be arranged on shore line comprises the antenna 11 of a mechanical rotation in certain direction, sweep speed can up to 5 second one turn, this antenna 11 can transmit and receive low wave beam and high beam signal: low wave beam is for covering earth's surface to intermediate altitude height space, and high wave beam is the space for High aititude height in covering.For the air traffic control radar on shore line, low wave beam can detect terrain object and aerial target simultaneously.Antenna 11 can launch series of electromagnetic pulse to paid close attention to guarded region, and electromagnetic pulse can reflect to antenna 11 by the object in this guarded region.The radar signal that some reflections off objects is returned needs to obtain paying close attention to, be then called as " target ", and the radar signal that other remaining reflections off objects are returned is called as " clutter ", the noise namely in radar system.Earth's surface target is considered to the noise in existing area control radar system, is therefore removed in its signal processing.Usually, the radar data collected from antenna 11 carries out pre-service by the bandpass filter of Data-Link, remove at the outside irrelevant signal of radar data or noise, then radar data solution is transferred to if radar data, then carries out the analog to digital conversion of radar data.Now, radar data is demodulated to base band data (I/Q data), and carries out low-pass filtering and sampling to base band data (I/Q data).This data can be sent to aerial target processor 15 and be further processed, for detection and tracking aerial target.
With reference to accompanying drawing 1, a kind of network type sea survaillance method based on air traffic control radar, mainly comprises the following steps:
1) each radar node accepts radar signal by antenna 11, transmitting-receiving subassembly 12, Up/Down Conversion device 13 and medium-frequency receiving and sending driver 14 successively;
2) data intake device 16 receives and processes the data from medium-frequency receiving and sending driver 14;
3) data intake device 16 is converted to the discernible form of sea-surface target processor 17 the radar signal received;
4) sea-surface target processor 17 receives and processes the data from data intake device 16, impact point detected;
5) data of all single radar nodes are sent to sea surveillance system central processing unit 3;
6) data of all radar nodes in air traffic control radar netting 1 integrated by sea surveillance system central processing unit 3, generate tracing point, and set up target following trajectory diagram according to impact point;
7) sea surveillance system central processing unit 3 is according to the demand of user terminal 2, and target following trajectory diagram is sent to user terminal 2.
Wherein, in described step 1), described host computer, according to actual conditions, controls specific radar node, scans specific region, and receiving radar signal.Described step 2) in, the data handling procedure of data intake device 16 comprises correction of data and loses or error in data, or abandons these correction of datas loss or error in data, low beam data is extracted, for detecting sea-surface target simultaneously.In described step 4), the data handling procedure of sea-surface target processor 17 comprises eliminates clutter and external disturbance.In described step 5), the data of single radar node are first through fire wall and safety encipher process, re-send to sea surveillance system central processing unit 3, sea surveillance system central processing unit 3 utilizes Data fusion technique to process from the track of all radar nodes and tracing figure, and provides the large picture mosaic consistent with all activities occurred in monitoring field; Data fusion is one and comprises signal transacting, information theory from the multidisciplinary technology of different field, data assessment and reasoning and artificial intelligence.Use several fusion framework to express all aspects of the information processing of separate sources, i.e. data and process, when the data that each radar node provides are by clutter or disturbing effect, data fusion can be used to process this shortage of data, data fusion also can be used to process may contradict data, data correlation, in a common picture mosaic data point reuse and mark, Data relationship, concentrate or new data in nonconcentrated process framework and different time points.The data layout of described middle sea surveillance system central processing unit 3 supports the data layout that NMEA form or any state security department require.
A kind of network type sea surveillance system based on air traffic control radar and method, its principle of work is: radar receives the signal of returning by antenna 11 can through transmitting-receiving subassembly 12, Up/Down Conversion device 13 and medium-frequency receiving and sending driver 14, the output signal of medium-frequency receiving and sending driver 14 is baseband signals, is also I/Q data.I/Q data can be sent to aerial target processor 15 for track production.Native system increases a data intake device 16 for receiving I/Q data at the output terminal of medium-frequency receiving and sending driver 14.This extra data intake device 16 only for receiving I/Q data, and can not disturb radar normal running or the I/Q data for being transferred to aerial target processor 15 in ASS(air surveillance system).Receive data by extra data intake device 16 and can be sent to sea-surface target processor 17 for searching surface Small object.The target data being input to sea-surface target processor 17 comprises the data of low wave beam and high wave beam, and with corresponding pulses, pulse repetition rate, about geographical north antenna direction and the low wave beam header to high switched-beam.Data intake device 16 receives and processes the data from medium-frequency receiving and sending driver 14, and the radar signal received is converted to the discernible form of sea-surface target processor 17.The data handling procedure of data intake device 16 comprises differentiates that correction of data is lost or error in data.The task of data intake device 16 is for differentiating and correcting loss of data or error in data caused by or other reasons crowded by Internet Transmission, by preventing the process interrupt error of sea-surface target processor 17 like this.Sea-surface target processor 17 can utilize advanced signal processing technology to carry out clutter and external disturbance Processing for removing to data stream, thus superficial objects point detected, and according to these superficial objects dot generation tracing points, and then be created as target following trajectory diagram.The pursuit path figure that sea-surface target processor 17 generates can define data layout with such as U.S.'s Marine Electronics association (NMEA) and send to multi-user by the network of safety.China shore line is all covered by a lot of radar, by area control radar system fit on sea-surface target processor 17 along the coastline, can form the sea surveillance system of a Comprehensive.The target following track of single radar node is sent to sea surveillance system central processing unit 3 and carries out data fusion, last result can pass to different user terminals 2 with specific data layout, comprises harbour management office, sea police department and national security community etc.Based on the network type sea surveillance system system of air traffic control radar according to user terminal 2 and operation requirements, go to coordinate each radar node duty by host computer transmitting system commander and steering order.Whole watch circle is the spliced map of all nodes.
More than that the better enforcement of invention is illustrated, but innovation and creation are not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (10)
1. the network type sea surveillance system based on air traffic control radar, comprise several radar nodes, each radar node comprises by a PC control and the antenna connected successively (11), transmitting-receiving subassembly (12), Up/Down Conversion device (13) and medium-frequency receiving and sending driver (14), it is characterized in that: the output terminal of described medium-frequency receiving and sending driver (14) is connected with data intake device (16), the output terminal of described data intake device (16) is connected with sea-surface target processor (17).
2. a kind of network type sea surveillance system based on air traffic control radar according to claim 1, it is characterized in that: some radar nodes connect successively, form air traffic control radar netting (1), air traffic control radar netting (1) is connected with a sea surveillance system central processing unit (3) by the Internet.
3. a kind of network type sea surveillance system based on air traffic control radar according to claim 2, it is characterized in that: also comprise some user terminals (2), described user terminal (2) is connected with sea surveillance system central processing unit (3) by the Internet.
4. a kind of network type sea surveillance system based on air traffic control radar according to claim 1, it is characterized in that: also comprise a targets in ocean display module (4), described targets in ocean display module (4) is connected with sea-surface target processor (17), and the output terminal of described medium-frequency receiving and sending driver (14) is also connected with aerial target processor (15) and aerial target display module (5) in turn.
5., based on a network type sea survaillance method for air traffic control radar, specifically comprise the following steps:
1) each radar node accepts radar signal by antenna (11), transmitting-receiving subassembly (12), Up/Down Conversion device (13) and medium-frequency receiving and sending driver (14) successively;
2) data intake device (16) receives and processes the data from medium-frequency receiving and sending driver (14);
3) data intake device (16) is converted to sea-surface target processor (17) discernible form the radar signal received;
4) sea-surface target processor (17) receives and processes the data from data intake device (16), impact point detected;
5) data of all single radar nodes are sent to sea surveillance system central processing unit (3);
6) data of all radar nodes in air traffic control radar netting (1) integrated by sea surveillance system central processing unit (3), generate tracing point, and set up target following trajectory diagram according to impact point;
7) sea surveillance system central processing unit (3) is according to the demand of user terminal (2), and target following trajectory diagram is sent to user terminal (2).
6. a kind of network type sea survaillance method based on air traffic control radar according to claim 5, it is characterized in that: in described step 1), described host computer, according to actual conditions, controls specific radar node, specific region is scanned, and receiving radar signal.
7. a kind of network type sea survaillance method based on air traffic control radar according to claim 5, it is characterized in that: described step 2) in, the data handling procedure of data intake device (16) comprises correction of data and loses or error in data, or abandon these correction of datas to lose or error in data, low beam data is extracted simultaneously.
8. a kind of network type sea survaillance method based on air traffic control radar according to claim 5, is characterized in that: in described step 4), and the data handling procedure of sea-surface target processor (17) comprises eliminates clutter and external disturbance.
9. a kind of network type sea survaillance method based on air traffic control radar according to claim 5, it is characterized in that: in described step 5), the data of single radar node, first through fire wall and safety encipher process, re-send to sea surveillance system central processing unit (3).
10. a kind of network type sea survaillance method based on air traffic control radar according to claim 1, is characterized in that: the data layout of described sea surveillance system central processing unit (3) supports the data layout that NMEA form or any state security department require.
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