CN103941253B - A kind of sliding window detection & extraction method of search radar data and system thereof - Google Patents
A kind of sliding window detection & extraction method of search radar data and system thereof Download PDFInfo
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- CN103941253B CN103941253B CN201410199529.0A CN201410199529A CN103941253B CN 103941253 B CN103941253 B CN 103941253B CN 201410199529 A CN201410199529 A CN 201410199529A CN 103941253 B CN103941253 B CN 103941253B
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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
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/292—Extracting wanted echo-signals
- G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
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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
- G01S13/66—Radar-tracking systems; Analogous systems
- G01S13/72—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
- G01S13/723—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar by using numerical data
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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
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
- G01S7/354—Extracting wanted echo-signals
Abstract
The invention discloses the sliding window detection & extraction system of a kind of search radar data, including the poly-heart processing module of distance, orientation slide window processing module, decision logic module, admission logic module, orientation counting and distance counting module, some mark output processing module and sequence generation module；The poly-heart processing module of distance solves radar and once crosses threshold signal broadening in distance and Target Splitting problem, the all one-time detection results participating in non-inherent accumulation are stored by orientation slide window processing module by distance, decision logic module has been used for target bearing width measure and has judged target bearing width, admission logic module completes target detection according to the parameter that decision logic module exports and provides final detection result, and orientation counting and distance counting module are for counting azimuth-range；Point mark output processing module is for when target end signal is effective, latching the parameters such as orientation code, distance codes and target bearing width；Sequence generation module is for providing the work clock of each module of this system。
Description
Technical field
The present invention relates to search radar signal processing and data processing field, particularly relate to sliding window detection & extraction method and the sliding window detection & extraction system thereof of the search radar data in the detection & extraction field of a kind of radar data。
Background technology
In modern war, the target that search radar is observed is often multi-direction, multiple batches of, and all targets all to be realized the automatic detection & extraction of real-time digitization by the detection & extraction of its data, and following the tracks of for radar track provides data accurately。
And, along with developing rapidly of the technology such as military affairs, Aeronautics and Astronautics, radar system design is proposed modularity, digitized, multi-functional and microminiaturized requirement。Only each module is achieved Highgrade integration by radar system, within the scope of limited volume and weight, could provide more rich function for radar system。Also after the echo-signal digitized only radar front end received, the Digital Signal Processing that could adopt various advanced person realizes the multi-functional characteristic of radar system, and therefore Integration Design and digitized processing are basic premise and the inevitable requirements of modern radar system development。
Traditional Data Detection admission device is realized by hardware, is generally made up of range extraction device, angle admission device and Slide-window detector, and equipment is complex, and can not solve the problems such as the error detection owing to target range division etc. causes, missing inspection survey well。Along with developing rapidly of digital processing technology, the function of Data Detection admission is realized by DSP (Digital Signal Processing) chip and software thereof gradually。The problem such as flase drop, missing inspection can be solved preferably with dsp software, the data precision measured is also higher, but data volume is big, one-time detection apart from unit (also referred to as range gate) each in radar range is crossed threshold signal and will form distance and angular data in real time, search radar amount of calculation is huge, needing special DSP to process board, cost intensive, complex software, real-time are also slightly inferior than device enrolled by hardware。
Therefore, it is necessary to propose that a kind of to realize the equipment of detection & extraction function based on CPLD or fpga chip simple, and the sliding window detection & extraction method of lower-cost search radar data。
Summary of the invention
In order to overcome the defect of prior art, it is desirable to provide it is a kind of based on CPLD or fpga chip, and less costly, it is possible to quickly scan for processing radar data, and the sliding window detection & extraction system of the higher search radar data of processing accuracy and sliding window detection & extraction method thereof。
To achieve these goals, the invention provides the sliding window detection & extraction system of a kind of search radar data, the sliding window detection & extraction system of these search radar data is respectively with Radar Signal Processing and timing means, radar track follows the tracks of device and servo control mechanism is connected, wherein, the sliding window detection & extraction system of these search radar data includes: the poly-heart processing module of distance, once crosses threshold signal broadening in distance and Target Splitting problem for solving radar；Orientation slide window processing module, for all one-time detection results participating in non-inherent accumulation being stored by distance, and provides initial detecting according to secondary detection thresholding；Decision logic module, has been used for target bearing width measure and has judged that whether target bearing width is effective；Admission logic module, for completing target detection according to the parameter of decision logic module output and provide final detection result, when target terminates, provides target end signal；Orientation counting and distance counting module, for azimuth-range is counted, and produce orientation code and distance codes；Point mark output processing module, for when target end signal is effective, latching the parameters such as orientation code, distance codes and target bearing width, thus forming a mark data, and carrying out output processing；Sequence generation module, for providing the work clock of the sliding window each module of detection & extraction system of these search radar data。
It is preferred that the poly-heart processing module of described distance includes data latches, the poly-heart truth table of distance and data broadening processor, the poly-heart truth table of described data latches, described distance and described data broadening processor are sequentially connected with；Wherein, described data latches once crosses threshold signal for the radar preserving signal processing output, the input of the poly-heart truth table of described distance is the one-time detection result of multiple distance unit, the poly-heart truth table of described distance is output as target range center, and described data broadening processor is for carrying out suitable broadening to target range center。
Preferably, described orientation slip processing module includes one-time detection result storage device RAMT, orientation sliding window table, data latches and buffer, described one-time detection result storage device RAMT connects described data latches, and described data latches connects described orientation sliding window table and described buffer respectively；Wherein, described one-time detection result storage device RAMT is for getting up the one-time detection result storage participating in the accumulative all pulses of non-coherent, and the data of same distance unit are saved in same address；Described orientation sliding window forms initial detecting result according to data and the secondary detection thresholding of storage；Described data latches and described buffer are for having assisted the renewal to RAM internal data。
Preferably, described decision logic module includes parameter production unit, target bearing width ram memory A, orientation calculates and decision logic unit, latch and buffer, described parameter production unit is for latching the initial detecting result of each distance unit, and forbids that logic prevents adjacent distance unit from forming difference mark by one；Described target bearing width ram memory A is used for storing target bearing width gauge numerical value and final detection result, and the data of same distance unit are saved in same address；Described orientation calculates and decision logic unit calculates target bearing width by orientation count pulse, and rejects the target that target bearing width is excessive or too small。
It is preferred that the degree of depth of described target bearing width ram memory A is determined by the ultimate range unit number of individual pulse, the figure place of described target bearing width ram memory A is determined by the azimuth width that target maximum is possible。
The present invention also provides for a kind of sliding window detection & extraction method of search radar data, and this sliding window detection & extraction method comprises the steps:
Step 1: process radar by the poly-heart processing module of distance and once cross threshold signal broadening in distance and Target Splitting；
Step 2: by orientation slide window processing module, all one-time detection results participating in non-inherent accumulation are stored by distance, and provides initial detecting according to secondary detection thresholding；
Step 3: complete target bearing width measure by decision logic module and judge that whether target bearing width is effective；
Step 4: the parameter that described admission logic module exports according to decision logic module completes target detection, and provides final detection result, when target terminates, described admission logic module provides target end signal；
Step 5: when target end signal is effective, will latch the parameters such as orientation code, distance codes and target bearing width by a mark output processing module and form some mark data, and carry out output processing。
Preferably, wherein, the sliding window detection & extraction method of these search radar data still further comprises, and provides work clock by sequence generation module for other each modules, and counted by orientation and apart from counting module, azimuth-range counted, produce orientation code and distance codes。
It is preferred that described step 1 farther includes: target range is divided situation by the poly-heart truth table of distance and data broadening processor and carries out processing apart from the poly-heart by the poly-heart processing module of described distance, obtains target range center；And carry out suitable broadening, impact secondary detection caused to eliminate target range to glimmer。
It is preferred that described step 2 farther includes: described orientation slide window processing module is by adopting one-time detection result storage device RAMT that data are stored, and passes through the continuous implementing reading and writing orientation sliding window to one-time detection result storage device RAMT；Described orientation slide window processing module forms initial detecting result also by orientation sliding window table according to the data stored and secondary detection thresholding。
Preferably, described step 3 farther includes: other each modules of the sliding window detection & extraction system that described sequence generation module is these search radar data provide work clock, and described clock generation module produces the sequential of work clock and guarantees that the Lothrus apterus of multiple memory is correctly read and write, and latch and buffer memory processing the correct of intermediate object program, thus ensureing that result is correct。
Compared with prior art, beneficial effects of the present invention is as follows:
1, the sliding window detection & extraction system of the search radar data of the present invention is by adopting the poly-heart processing module of distance, orientation slide window processing module, decision logic module, admission logic module, orientation counting and distance counting module, some mark output processing module and sequence generation module, decrease and enter the input data volume that radar data processes, make radar data process and more efficiently carry out Track In Track process, so that this sliding window detection & extraction system equipment is simple, reliability is high, and this sliding window detection & extraction system real time is good, cheap。
2, the sliding window detection & extraction system of the search radar data of the present invention is by adopting above technical scheme, in scanning for radar data processing procedure so that it is admission processing accuracy is high, and without flase drop, missing inspection problem。
3, the sliding window detection & extraction method of the search radar data of the present invention, there is broad applicability, alertness monitor radar, target radar that various antenna beam scans continuously etc. can be common to, the input of admission both can be the once mistake threshold signal of single wave beam, it can also be the once mistake threshold signal of multiple wave beam, can also is that the answer signal that iff interrogator exports so that it is range of application is more extensive。
Accompanying drawing explanation
Fig. 1 is the sliding window detection & extraction system architecture diagram of search radar data of the present invention；
The sliding window detection & extraction system structure that Fig. 2 is search radar data of the present invention realizes block diagram；
Fig. 3 be the poly-heart processing module of distance of the sliding window detection & extraction system of search radar data of the present invention realize block diagram；
Fig. 4 be the orientation slide window processing module of the sliding window detection & extraction system of search radar data of the present invention realize block diagram；
Fig. 5 be the decision logic module of the sliding window detection & extraction system of search radar data of the present invention realize block diagram；
Fig. 6 be the admission logic module of the sliding window detection & extraction system of search radar data of the present invention realize block diagram；
Fig. 7 is the timing diagram of the sequence generation module generation of the sliding window detection & extraction system of search radar data of the present invention。
Detailed description of the invention:
Referring to the accompanying drawing illustrating the embodiment of the present invention, the description present invention in greater detail below。But, the present invention can in different forms, specification etc. realizes, and should not be construed as by restriction of the embodiment of proposition at this。On the contrary, it is proposed to these embodiments are to reach fully and complete disclosure, and make more to understand the scope of the present invention completely about those skilled in the art。In these accompanying drawings, for clearly visible, it is possible to zoomed in or out relative size。
Sliding window detection & extraction system according to of the invention process search radar data and sliding window detection & extraction method thereof are described in detail referring now to Fig. 1 to Fig. 7, as shown in Figure 1, the sliding window detection & extraction system of sliding window these search radar data of detection & extraction system of these search radar data respectively with Radar Signal Processing and timing means, radar track follows the tracks of device and servo control mechanism connects, wherein, the sliding window detection & extraction system of these search radar data includes: the poly-heart processing module of distance, orientation slide window processing module, decision logic module, admission logic module, orientation counting and distance counting module, point mark output processing module and sequence generation module。And, this distance gathers heart processing module, once crosses threshold signal broadening in distance and Target Splitting problem for solving radar；This orientation slide window processing module, for all one-time detection results participating in non-inherent accumulation being stored by distance, and provides initial detecting according to secondary detection thresholding；This decision logic module, has been used for target bearing width measure and has judged that whether target bearing width is effective；This admission logic module, for completing target detection according to the parameter of decision logic module output and provide final detection result, when target terminates, provides target end signal；This orientation counting and distance counting module, for azimuth-range is counted, and produce orientation code and distance codes；This mark output processing module, for when target end signal is effective, latching the parameters such as orientation code, distance codes and target bearing width, thus forming a mark data, and carrying out output processing；This sequence generation module, for providing the work clock of the sliding window each module of detection & extraction system of these search radar data。
In specific implementation process, as shown in Figure 1, the Data Detection recording system of search radar includes the sliding window detection & extraction system of these search radar data and the Radar Signal Processing of prior art and timing means, radar track tracing device and servo control mechanism, in embodiment between Radar Signal Processing and radar track are followed the tracks of, detection & extraction device of the prior art is replaced by the sliding window detection & extraction system of these search radar data, its concrete annexation is: Radar Signal Processing provides coherent processing clock CLKIN with timing means, distance reference pulse RRP (i.e. zero kilometer pulse), coherent processing effective impulse CPI, secondary detection thresholding NDM, reset signal RST processes for this sliding window detection & extraction system, process forms some mark data and is sent to radar track tracking after completing；It addition, servo provides orientation reference signal ARP and orientation count pulse ACP for this sliding window detection & extraction system。The sliding window detection & extraction method of these search radar data as shown in Figure 2 realize block diagram, the sliding window detection & extraction system of these search radar data realizes in the interface chip CPLD and fpga chip of signal processing and data process, individually do not take hardware device, only take up little resources of chip。In implementation process, the sliding window detection & extraction system of these search radar data includes the poly-heart processing module of distance, orientation slide window processing module, decision logic module, admission logic module, orientation counting and distance counting module, some mark output processing module and sequence generation module, thereby through adopting the poly-heart process of distance, orientation slide window processing and decision logic and admission logical process, efficiently solve error detection in radar secondary detection, leakage test problems, thus improve plot extraction precision, it is achieved that search radar Data Detection admission function。
In specific implementation process, as it is shown on figure 3, the poly-heart processing module of this distance once crosses threshold signal broadening in distance and Target Splitting problem for solving radar。The poly-heart processing module of this distance includes data latches, the poly-heart truth table of distance and data broadening processor, and the poly-heart truth table of this data latches, distance and data broadening processor are sequentially connected with；Wherein, this data latches once crosses threshold signal T for what preserve signal processing output, and the figure place of this data latches is needed to carry out, by radar, the distance unit number (also becoming range gate) that the poly-heart of distance processes and determines；The poly-heart truth table input of this distance is the one-time detection result of multiple distance unit, and the poly-heart truth table of this distance is output as target range center；This data broadening processor is for carrying out suitable broadening to target range center, thus eliminating the impact that secondary detection is caused by target range flicker, has been output as the one-time detection result Tpc that the poly-heart of distance processes；In an embodiment, the determination principle of the poly-heart truth table output valve of this distance is: when inputting the position that data are " 1 " and concentrating on input data center, be output as " 1 "；When inputting in the middle of data two " 1 " only when one " 0 ", should " 0 " also regard as " 1 ", and, as shown in the table for when distance gather heart truth table input be 12 time, the determination mode of its output valve:
| Input | Output |
| 0000 0110 0000 | 1 |
| 0000 1111 0000 | 1 |
| 0000 1011 0000 | 1 |
| 0001 1010 1000 | 1 |
| … … | … |
| 0000 0000 0001 | 0 |
| 1111 0000 0010 | 0 |
| … … | … |
As shown above, the poly-heart processing module of this distance is efficiently solved by the poly-heart truth table of this distance and once crosses threshold signal broadening in distance and Target Splitting problem。
In specific implementation process, this orientation slide window processing module is for storing all one-time detection results participating in non-inherent accumulation by distance, and provides initial detecting according to secondary detection thresholding。Concrete, as shown in Figure 4, this orientation sliding window module includes one-time detection result storage device RAMT, orientation sliding window table, data latches and buffer, and this one-time detection result storage device RAMT connects this data latches, and this data latches connects this orientation sliding window table and buffer respectively；Wherein, the one-time detection result Tpc participating in all pulses of non-inherent accumulation is stored by this one-time detection result storage device RAMT, and the data for same distance unit are saved in same address, the figure place of this one-time detection result storage device RAMT is determined by maximum non-inherent accumulation umber of pulse n, this one-time detection result storage device RAMT only retains the data of n up-to-date pulse, thus realizing orientation sliding window；This orientation sliding window table forms initial detecting result PB according to this one-time detection result storage device RAMT data stored and secondary detection thresholding；This data latches and buffer are for having assisted the renewal to RAM internal data。Concrete, the output valve of this orientation sliding window table must determine that principle is: when the number and ordering that input " 1 " in data meet secondary detection thresholding, this orientation sliding window table is output as " 1 "。In a particular embodiment, if this maximum non-inherent accumulation umber of pulse n=7, secondary detection thresholding is " 3 select 2 ", " 5 select 3 " or " 7 select 4 " (arbitrarily meeting one), then the determination mode of this orientation sliding window table output valve is as shown in the table:
| Input | Output |
| 000 1010 | 1 |
| 010 1110 | 1 |
| 101 0101 | 1 |
| … … | … |
| 100 1001 | 0 |
| 000 0001 | 0 |
| 000 0010 | 0 |
| … … | … |
As shown above, this orientation sliding window table is not only suitable for single secondary Threshold detection, is applicable to again the compound detection of multiple secondary detection thresholding。
In specific implementation process, this decision logic module has been used for target bearing width measure and has judged that whether target bearing width is effective。Concrete, as shown in Figure 5, this decision logic module includes parameter production unit, target bearing width ram memory A, orientation calculates and decision logic unit, latch and buffer, this parameter production unit is for latching the initial detecting result PB etc. of each distance unit, and logic prevents the distance unit of next-door neighbour from forming difference mark to utilize one to forbid；This target bearing width ram memory A is used for storing target bearing width gauge numerical value and final detection result TAO, and the data of same distance unit are saved in same address, and the degree of depth of this target bearing width ram memory A is determined by the ultimate range unit number of individual pulse, and the figure place of this target bearing width ram memory A is determined by the azimuth width that target maximum is possible；This orientation calculates and target bearing width AS is counted by decision logic unit by orientation count pulse ACP, when target bearing width is in the scope that radar is interested, provides width effective marker, and to the excessive or too small target of width, then width is invalid。
In specific implementation process, the admission logic module of the sliding window detection & extraction system of these search radar data as shown in Figure 6 realize block diagram, the parameter that this admission logic module exports according to decision logic module completes target detection, provide final detection result TAO, provide target end signal when target terminates；Concrete, when continuous two pulses of testing result of certain range gate and next-door neighbour's range gate thereof are " 0 ", being judged to that target ends, the decision rule that target ends can become according to radar user demand, and the method that realizes of this admission logic module is slightly different accordingly。This mark output processing module is when target end signal is effective, latch the parameter such as security code AA, distance codes AR and target bearing width AS and form some mark data, if there being the parameters such as pitching code, target strength, also in the lump by parameter addition point mark data, finally carry out output processing；All processing modules that this sequence generation module is the sliding window detection & extraction system of these search radar data produce work clock (sequential relationship needed for the work clock of its generation is as shown in Figure 7), wherein, this distance count pulse RCP is the two divided-frequency of input clock CLKIN, and other lock number, reading/writing pulses also have strict sequential relationship；And this orientation counting and distance counting module are for counting azimuth-range, produce orientation code AA and distance codes AR, for other processing modules。
In specific implementation process, detecting system by the sliding window of these search radar data and radar data is processed, the sliding window detection & extraction of concrete sliding window detection & extraction method comprises the steps:
Step 1: process radar by the poly-heart processing module of distance and once cross threshold signal broadening in distance and Target Splitting；Target range is divided situation by the poly-heart truth table of distance and data broadening processor and carries out processing apart from the poly-heart by the poly-heart processing module of this distance, obtains target range center；And carry out suitable broadening, impact secondary detection caused to eliminate target range to glimmer；
Step 2: by orientation slide window processing module, all one-time detection results participating in non-inherent accumulation are stored by distance, and provides initial detecting according to secondary detection thresholding；This orientation slide window processing module is by adopting one-time detection result storage device RAMT that data are stored, and passes through the continuous implementing reading and writing orientation sliding window to one-time detection result storage device RAMT；This orientation slide window processing module forms initial detecting result also by orientation sliding window table according to the data stored and secondary detection thresholding；
Step 3: complete target bearing width measure by decision logic module and judge that whether target bearing width is effective；Other each modules of the sliding window detection & extraction system that sequence generation module is these search radar data provide work clock, and the sequential of this clock generation module generation work clock guarantees that the Lothrus apterus of how each memory is correctly read and write, and latch and buffer memory processing the correct of intermediate object program, thus ensureing that result is correct；
Step 4: the parameter that this admission logic module exports according to decision logic module completes target detection, and provides final detection result, when target terminates, this admission logic module provides target end signal；
Step 5: when target end signal is effective, will latch the parameters such as orientation code, distance codes and target bearing width by a mark output processing module and form some mark data, and carry out output processing。
And, the sliding window detection & extraction method of these search radar data still further comprises, and provides work clock by sequence generation module for other each modules, and is counted by orientation and apart from counting module, azimuth-range is counted, produces orientation code and distance codes。
The sliding window detection & extraction method of search radar data provided by the invention and system thereof, by adopting CPLD or fpga chip to realize detection & extraction function, equipment is simple, cheap, by the poly-heart process of distance, orientation slide window processing, efficiently solve error detection in radar secondary detection, leakage test problems, and be effectively increased plot extraction precision, it is achieved thereby that the Data Detection admission function of search radar。
Obviously, the present invention can be carried out various change and deformation without deviating from the spirit and scope of the present invention by those skilled in the art。So, if these amendments of the present invention and deformation belong in the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these changes。
Claims (10)
1. a sliding window detection & extraction system for search radar data, respectively with Radar Signal Processing and timing means, radar track follows the tracks of device and servo control mechanism is connected, it is characterised in that the sliding window detection & extraction system of these search radar data includes:
The poly-heart processing module of distance, once crosses threshold signal broadening in distance and Target Splitting problem for solving radar；
Orientation slide window processing module, for all one-time detection results participating in non-inherent accumulation being stored by distance, and provides initial detecting according to secondary detection thresholding；
Decision logic module, has been used for target bearing width measure and has judged that whether target bearing width is effective；
Admission logic module, for completing target detection according to the parameter of decision logic module output and provide final detection result, when target terminates, provides target end signal；
Orientation counting and distance counting module, for azimuth-range is counted, and produce orientation code and distance codes；
Point mark output processing module, for when target end signal is effective, latching the parameter including orientation code, distance codes and target bearing width, thus forming a mark data, and carrying out output processing；
Sequence generation module, for providing the work clock of the sliding window each module of detection & extraction system of these search radar data。
2. the sliding window detection & extraction system of search radar data according to claim 1, it is characterized in that, the poly-heart processing module of described distance includes data latches, the poly-heart truth table of distance and data broadening processor, and the poly-heart truth table of described data latches, described distance and described data broadening processor are sequentially connected with；Wherein, described data latches once crosses threshold signal for the radar preserving signal processing output, the input of the poly-heart truth table of described distance is the one-time detection result of multiple distance unit, the poly-heart truth table of described distance is output as target range center, and described data broadening processor is for carrying out suitable broadening to target range center。
3. the sliding window detection & extraction system of search radar data according to claim 1, it is characterized in that, described orientation slip processing module includes one-time detection result storage device RAMT, orientation sliding window table, data latches and buffer, described one-time detection result storage device RAMT connects described data latches, and described data latches connects described orientation sliding window table and described buffer respectively；Wherein, described one-time detection result storage device RAMT is for getting up the one-time detection result storage participating in the accumulative all pulses of non-coherent, and the data of same distance unit are saved in same address；Described orientation sliding window forms initial detecting result according to data and the secondary detection thresholding of storage；Described data latches and described buffer are for having assisted the renewal to RAMT internal data。
4. the sliding window detection & extraction system of search radar data according to claim 1, it is characterized in that, described decision logic module includes parameter production unit, target bearing width ram memory A, orientation calculates and decision logic unit, latch and buffer, described parameter production unit is for latching the initial detecting result of each distance unit, and forbids that logic prevents adjacent distance unit from forming difference mark by one；Described target bearing width ram memory A is used for storing target bearing width gauge numerical value and final detection result, and the data of same distance unit are saved in same address；Described orientation calculates and decision logic unit calculates target bearing width by orientation count pulse, and rejects the target that target bearing width is excessive or too small。
5. the sliding window detection & extraction system of search radar data according to claim 4, it is characterized in that, the degree of depth of described target bearing width ram memory A is determined by the ultimate range unit number of individual pulse, and the figure place of described target bearing width ram memory A is determined by the azimuth width that target maximum is possible。
6. a sliding window detection & extraction method for search radar data, utilizes the sliding window detection & extraction system of search radar data as claimed in claim 1 to carry out sliding window detection & extraction, it is characterised in that to comprise the steps:
Step 1: process radar by the poly-heart processing module of distance and once cross threshold signal broadening in distance and Target Splitting；
Step 2: by orientation slide window processing module, all one-time detection results participating in non-inherent accumulation are stored by distance, and provides initial detecting according to secondary detection thresholding；
Step 3: complete target bearing width measure by decision logic module and judge that whether target bearing width is effective；
Step 4: the parameter that described admission logic module exports according to decision logic module completes target detection, and provides final detection result, when target terminates, described admission logic module provides target end signal；
Step 5: when target end signal is effective, forms some mark data by a mark output processing module by the parameter including latching orientation code, distance codes and target bearing width, and carries out output processing。
7. the sliding window detection & extraction method of search radar data according to claim 6, it is characterized in that, wherein, the sliding window detection & extraction method of these search radar data still further comprises, work clock is provided for other each modules by sequence generation module, and counted by orientation and apart from counting module, azimuth-range counted, produce orientation code and distance codes。
8. the sliding window detection & extraction method of search radar data according to claim 6, it is characterized in that, described step 1 farther includes: target range is divided situation by the poly-heart truth table of distance and data broadening processor and carries out processing apart from the poly-heart by the poly-heart processing module of described distance, obtains target range center；And carry out suitable broadening, impact secondary detection caused to eliminate target range to glimmer。
9. the sliding window detection & extraction method of search radar data according to claim 6, it is characterized in that, described step 2 farther includes: described orientation slide window processing module is by adopting one-time detection result storage device RAMT that data are stored, and passes through the continuous implementing reading and writing orientation sliding window to one-time detection result storage device RAMT；Described orientation slide window processing module forms initial detecting result also by orientation sliding window table according to the data stored and secondary detection thresholding。
10. the sliding window detection & extraction method of search radar data according to claim 6, it is characterized in that, described step 3 farther includes: other each modules of the sliding window detection & extraction system that described sequence generation module is these search radar data provide work clock, and described sequence generation module produces the sequential of work clock and guarantees that the Lothrus apterus of multiple memory is correctly read and write, and latch and buffer memory processing the correct of intermediate object program, thus ensureing that result is correct。
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| CN110646792B (en) * | 2019-11-04 | 2022-04-12 | 中国人民解放军空军工程大学 | Radar search window setting method based on observation whistle digital telescope |
| CN113050052B (en) * | 2021-03-08 | 2022-08-09 | 四川九洲空管科技有限责任公司 | Multi-target response simulation method for friend or foe identification system |
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