CN105527613A - Data processing system and method - Google Patents
Data processing system and method Download PDFInfo
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- CN105527613A CN105527613A CN201510996461.3A CN201510996461A CN105527613A CN 105527613 A CN105527613 A CN 105527613A CN 201510996461 A CN201510996461 A CN 201510996461A CN 105527613 A CN105527613 A CN 105527613A
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract
The invention discloses a data processing system and method. A first demultiplexer divides data into data subsets of corresponding single beams, each data processor processes a data subset of corresponding single beams, and a second demultiplexer collects the data processed by the data processors and then distributes the data to a point trace acquisition module, a tracker module, a data format conversion module and a display module for processing in sequence; the system provides a low-cost solution for ocean radar to execute an advanced signal processing technology; the system is flexible in processing capability for fulfilling the purposes, and can be easily added with more SDPs (Signal Data Processors) if more processing capability is needed; and the system can bear advanced signal processing suitable for small-target detection and effective clutter suppression in real time.
Description
Technical field
The present invention relates to radar monitoring field, be specifically related to a kind of data handling system and method.
Background technology
The mechanism that port office, border and infrastructure are protected and enterprise, such as oil and natural gas industry and sea transport, in severe marine environment, the requirement of target size and detectability shows: they need marine radar to listen carefully powerful signal processing technology.Commercially available marine radar system architecture limits the signal processing technology using computation-intensive, and they depend on the single or multiple threat processors of the I/Q data speed of restriction mostly, but can only do simple signal processing technology, as CA, CFA.If clutter increases, they cannot detect and follow the trail of the target of normal size in canoe/object under normal sea situation or high sea situation mostly.Although there is enterprise to propose to use high-end dsp processor, high-end DSP has higher processing power, also makes these system expensive, and meanwhile China's relevant law policy also makes the regulation of strict outlet.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, one of them object of the present invention is to provide that a kind of cost is low, computing power strong and treatment capacity data handling system flexibly.
To achieve these goals, the technical solution used in the present invention is:
A kind of data handling system, it is characterized in that: comprise the first demultplexer, the second multiplexer, be provided with some data processors between described first demultplexer and the second multiplexer, the second multiplexer output terminal is tie point mark acquisition module, tracker module, data layout conversion module and display module successively.。
As the improvement of technique scheme, described data processor comprises the data intake device unit, impulse disturbances filter unit, doppler processing unit, clutter recognition unit, constant false alarm rate unit, the binary integration unit that connect successively.
As the improvement of technique scheme, data store with NMEA form by described data layout conversion module.
In order to overcome above-mentioned the deficiencies in the prior art, another one object of the present invention is to put forward a kind of data processing method, and it carries out optimization collocation in detection with when following the tracks of weather activity to phased array weather radar resource.
To achieve these goals, the technical solution used in the present invention is:
A kind of data processing method, specifically comprises the following steps:
It is characterized in that specifically comprising the steps:
1) time series data is divided into the data subset of corresponding independent wave beam through the first demultplexer, and data acquisition module carries out error detection and rectification to data subset, and arranges according to corresponding pulse and marshal data send to impulse disturbances filter unit;
2) impulse disturbances filter unit carries out error detection to data subset, removes a large amount of pulse spikes caused by lightning or other environmental factors;
3) use Doppler filter or Fourier transform that data subset is moved to Doppler amplitude territory from pulse height territory;
4) remove clutter and other incoherent signals and be sent to constant false alarm rate module;
5) constant false alarm rate module carries out target detection;
6) binary integration unit can be sent to by the echo signal that constant false alarm rate module is detected, and pass through the random behavior of logic exclusion false target;
7) the second multiplexer is first collected signal in step 6) and is reallocated to a mark acquisition module,
8) put mark acquisition module extraction result and can be sent to tracker module, track is determined;
9) data conversion module translates data formats, storage showing.
As the improvement of technique scheme, the detailed process that described step 4) removes clutter is: effectively remove clutter by using clutter map, the formation of described clutter map determined by the mean value of lasting scanning, can upgrade according to the scan-data that imports into, and be saved for from clutter during identification real goal as a reference.
As the improvement of technique scheme, in described step 5), constant false alarm rate module can adopt the mode of the average CFAR detection of mixed cell and Ordered Statistic CFAR detection to strengthen ability to target detection under strong clutter and disturbed condition.
As the improvement of technique scheme, the method for the average CFAR detection of mixed cell estimates noise rank by using cell-average technology, and the method for Ordered Statistic CFAR detection estimates sound level by statistics; Described sound level is used to compare with the signal of object.
As the improvement of technique scheme, described step 7) detects track by using Kalman filtering method, removes false sign, provides the serviceability of radar.
As the improvement of technique scheme, data store with NMEA form by data layout conversion module.
The invention has the beneficial effects as follows: a kind of data handling system and method, by being divided into the data subset of corresponding independent wave beam through the first demultplexer, the data subset of each data processor to the independent wave beam of correspondence processes, the Data Collection of data processor processes is first reallocated and to be processed successively to a mark acquisition module, tracker module, data layout conversion module and display module by described second multiplexer, and for marine radar performs, advanced signal processing technology provides a low cost solution to this system; It is for being flexibly with the amount realizing the processing power that its target needs, and if desired more processing ability is then easy to increase more SDP; The advanced signal transacting of applicable small target deteection and effective clutter recognition can be carried in real time.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the process flow diagram of the specific embodiment of the invention;
Fig. 2 is the system construction drawing of the specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details:
With reference to accompanying drawing 2, the present invention proposes a kind of data handling system, comprise two groups of demultplexers and some data processors, first demultplexer output terminal connects some Signal Data Processors, data processor output terminal connects the second multiplexer, second multiplexer output terminal tie point mark acquisition module successively, tracker module, data layout conversion module and display module, time series data is divided into the data subset of corresponding independent wave beam through the first demultplexer, the data subset of each data processor to the independent wave beam of correspondence processes, the Data Collection of data processor processes is first reallocated to a mark acquisition module by described second multiplexer, tracker module, data layout conversion module and display module process successively.
Data processor comprises the data intake device unit, impulse disturbances filter unit, doppler processing unit, clutter recognition unit, constant false alarm rate unit, the binary integration unit that connect successively.
Principle of work is: the air traffic control radar be arranged on shore line comprises the antenna of a mechanical rotation in certain direction, sweep speed can up to 5 second one turn, this antenna 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 can launch series of electromagnetic pulse to paid close attention to guarded region, and electromagnetic pulse can reflect to antenna 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 carries out pre-service by the bandpass filter of Data-Link, removes 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 and be further processed, for detection and tracking aerial target.
First the I/Q data sent from transceiver can send to intake device, is then sent to data intake device and carries out error detection and rectification, and arrange and marshal data according to corresponding pulse. first modular pulse interference filter of processing signals.In this module, error detection can be carried out to data, remove a large amount of pulse spikes caused by lightning or other environmental factors. in order to reduce this edge effect, replace large spike by adding interpolation in adjacent interval.
Next step data are sent to Doppler processing block, and use Doppler filter or Fourier transform that data are moved to Doppler amplitude territory from pulse height territory.Then moving target is utilized to indicate wave filter to remove clutter and other incoherent signals.Clutter recognition module removes clutter effectively by using clutter map, and the formation of this clutter map determined by the mean value of lasting scanning, can upgrade according to the scan-data that imports into, and be saved for from clutter during identification real goal as a reference.Data are sent to constant false alarm rate module and carry out target detection/constant false alarm rate module data and can be sent to CFAR detection module and carry out target detection.The mode of the average CFAR detection of mixed cell and Ordered Statistic CFAR detection can be adopted under strong clutter and disturbed condition to strengthen ability to target detection.The method that CA-CFAR detects estimates noise rank by using cell-average technology, and the method for Ordered Statistic CFAR detection estimates sound level by statistics.And this sound level is used to compare with the signal of object.Tested echo signal can be sent to binary integrated package, and passes through the random behavior of logic exclusion false target.The echo signal be detected through binary integrated package can send to a mark extraction module.Point mark extracts result can be sent to tracker, and track can be determined.By using Kalman filtering method to detect track, removing false sign, the serviceability of radar is provided.The track that tracker produces can be formulated standard format (NMEA) with National Marine Electronics association and store.Like this, any commercialization supports that display and software that National Marine Electronics association formulates standard format can apply these track datas with out of Memory together with map etc., also can give specific client by the Internet Transmission of safety.
Embodiments of the invention another one object is to provide a kind of data processing method, mainly comprises the following steps:
1) time series data is divided into the data subset of corresponding independent wave beam through the first demultplexer, and data acquisition module carries out error detection and rectification to data subset, and arranges according to corresponding pulse and marshal data send to impulse disturbances filter unit;
2) impulse disturbances filter unit carries out error detection to data subset, removes a large amount of pulse spikes caused by lightning or other environmental factors;
3) use Doppler filter or Fourier transform that data subset is moved to Doppler amplitude territory from pulse height territory;
4) remove clutter and other incoherent signals and be sent to constant false alarm rate module; The detailed process removing clutter is: effectively remove clutter by using clutter map, the formation of described clutter map determined by the mean value of lasting scanning, can upgrade according to the scan-data that imports into, and be saved for from clutter during identification real goal as a reference;
5) constant false alarm rate module carries out target detection; Constant false alarm rate module can adopt the mode of the average CFAR detection of mixed cell and Ordered Statistic CFAR detection to strengthen ability to target detection under strong clutter and disturbed condition;
6) binary integrated package can be sent to by the echo signal that constant false alarm rate module is detected, and pass through the random behavior of logic exclusion false target;
7) the second multiplexer is first collected signal in step 6) and is reallocated to a mark acquisition module;
8) put mark acquisition module extraction result and can be sent to tracker module, track can be determined; Point mark acquisition module detects track by using Kalman filtering method, removes false sign, provides the serviceability of radar;
9) data conversion module translates data formats, storage showing.
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 (9)
1. a data handling system, it is characterized in that: comprise the first demultplexer, the second multiplexer, be provided with some data processors between described first demultplexer and the second multiplexer, the second multiplexer output terminal is tie point mark acquisition module, tracker module, data layout conversion module and display module successively.
2. a kind of data handling system according to claim 1, is characterized in that: described data processor comprises the data intake device unit, impulse disturbances filter unit, doppler processing unit, clutter recognition unit, constant false alarm rate unit and the binary integration unit that connect successively.
3. according to a kind of data handling system according to claim 1, it is characterized in that: data store with NMEA form by described data layout conversion module.
4., based on the arbitrary described a kind of data processing method of claim 1-3, it is characterized in that specifically comprising the steps:
1) time series data is divided into the data subset of corresponding independent wave beam through the first demultplexer, and data acquisition module carries out error detection and rectification to data subset, and arranges according to corresponding pulse and marshal data send to impulse disturbances filter unit;
2) impulse disturbances filter unit carries out error detection to data subset, removes a large amount of pulse spikes caused by lightning or other environmental factors;
3) use Doppler filter or Fourier transform that data subset is moved to Doppler amplitude territory from pulse height territory;
4) remove clutter and other incoherent signals and be sent to constant false alarm rate module;
5) constant false alarm rate module carries out target detection;
6) binary integration unit can be sent to by the echo signal that constant false alarm rate module is detected, and pass through the random behavior of logic exclusion false target;
7) the second multiplexer is first collected signal in step 6) and is reallocated to a mark acquisition module;
8) put mark acquisition module extraction result and can be sent to tracker module, track is determined;
9) data conversion module translates data formats, storage showing.
5. according to a kind of data processing method according to claim 4, it is characterized in that, the detailed process removing clutter in described step 4) is: effectively remove clutter by using clutter map, the formation of described clutter map determined by the mean value of lasting scanning, can upgrade according to the scan-data that imports into, and be saved for from clutter during identification real goal as a reference.
6. according to a kind of data processing method according to claim 4, it is characterized in that, in described step 5), constant false alarm rate module can adopt the mode of the average CFAR detection of mixed cell and Ordered Statistic CFAR detection under strong clutter and disturbed condition.
7. according to a kind of data processing method according to claim 4, it is characterized in that, the method for the average CFAR detection of mixed cell estimates noise rank by using cell-average algorithm, and the method for Ordered Statistic CFAR detection estimates sound level by statistics; Described sound level is for comparing with the signal of object.
8. according to a kind of data processing method according to claim 4, it is characterized in that, described step 8) mid point mark extraction module detects track by using Kalman filtering method, removes false sign.
9. according to a kind of data processing method according to claim 4, it is characterized in that, in described step 9), data store with NMEA form by data layout conversion module.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164419A (en) * | 2018-08-15 | 2019-01-08 | 中国电子科技集团公司第二十研究所 | Multi-platform Non-order matrix processing method based on interactive multi-model |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546089A (en) * | 1995-08-10 | 1996-08-13 | The United States Of America As Represented By The Secretary Of The Air Force | Optical monopulse chirp processor |
| US7741992B2 (en) * | 2006-11-02 | 2010-06-22 | Raytheon Canada Limited | Moving target detector for radar systems |
| CN104407347A (en) * | 2014-12-10 | 2015-03-11 | 珠海纳睿达科技有限公司 | Radar system |
| CN104459669A (en) * | 2014-12-10 | 2015-03-25 | 珠海纳睿达科技有限公司 | Radar reflection signal processing device and method |
| CN205484780U (en) * | 2015-12-24 | 2016-08-17 | 珠海加中通科技有限公司 | Data processing system |
-
2015
- 2015-12-24 CN CN201510996461.3A patent/CN105527613B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546089A (en) * | 1995-08-10 | 1996-08-13 | The United States Of America As Represented By The Secretary Of The Air Force | Optical monopulse chirp processor |
| US7741992B2 (en) * | 2006-11-02 | 2010-06-22 | Raytheon Canada Limited | Moving target detector for radar systems |
| CN104407347A (en) * | 2014-12-10 | 2015-03-11 | 珠海纳睿达科技有限公司 | Radar system |
| CN104459669A (en) * | 2014-12-10 | 2015-03-25 | 珠海纳睿达科技有限公司 | Radar reflection signal processing device and method |
| CN205484780U (en) * | 2015-12-24 | 2016-08-17 | 珠海加中通科技有限公司 | Data processing system |
Non-Patent Citations (1)
| Title |
|---|
| 李勇军: "外辐射源雷达***恒虚警检测及数据处理", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164419A (en) * | 2018-08-15 | 2019-01-08 | 中国电子科技集团公司第二十研究所 | Multi-platform Non-order matrix processing method based on interactive multi-model |
| CN109164419B (en) * | 2018-08-15 | 2022-07-05 | 中国电子科技集团公司第二十研究所 | Multi-platform disorder measurement processing method based on interactive multi-model |
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Address after: No.2 Gangle Road, Tangjiawan Town, Zhuhai City, Guangdong Province 519080 Patentee after: Guangdong Narui Radar Technology Co.,Ltd. Address before: 519080 unit n, room 607, 6th floor, main building, No.10, Keji 1st Road, Gangwan Avenue, Tangjiawan Town, Zhuhai City, Guangdong Province Patentee before: Zhuhai Naruida Technology Co.,Ltd. |
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