CN102901961A - Optimal multi-track branch target tracking implementation method based on clutter information diagram - Google Patents
Optimal multi-track branch target tracking implementation method based on clutter information diagram Download PDFInfo
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- CN102901961A CN102901961A CN 201210438349 CN201210438349A CN102901961A CN 102901961 A CN102901961 A CN 102901961A CN 201210438349 CN201210438349 CN 201210438349 CN 201210438349 A CN201210438349 A CN 201210438349A CN 102901961 A CN102901961 A CN 102901961A
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Abstract
The invention discloses an optimal multi-track branch target tracking implementation method based on a clutter information diagram. The method is mainly applied to tracking of two-coordinate radar to a quick target in an empty channel. The method comprises the following processes of: dividing a whole airspace into N*M clutter information diagram units according to distance and direction, wherein a fixed clutter area and a random clutter area are stored in each clutter information diagram unit; when an antenna scans the directions of the clutter diagram units, updating each clutter information diagram unit, and renumbering trace points of the fixed clutter areas; selecting out fixed clutters from related port door trace points of the tracked target according to the trace point numbers, counting the rest trace points and judging the clutter background density of the target; and determining different track branch conditions according to the clutter background density of the target. The method can solve the problems of target loss caused by trace point deviation during condensation due to clutter superposition in a high-density clutter area and target loss caused when no trace point can be detected in a few periods in a low-density clutter area.
Description
Technical field
The invention belongs to the radar target process field, refer in particular to the tracking for two dimensional Radar fast targets under the clutter background.
Background technology
In two dimensional Radars target following because do not have elevation information thus be subjected to extra large clutter and the ground clutter disturbing effect larger, adopting many flight paths algorithm to carry out the target following processing under the clutter background is a kind of more effective mode, but because many flight paths algorithm flight path branch number is limited, so it is necessary avoiding producing unnecessary false flight path branch as far as possible, the clutter hum pattern is applied to reduces false flight path branch in this process, and in high density clutter situation, reduce track rejection.
Clutter generally is divided into ground clutter, extra large clutter and meteorological clutter, wherein ground clutter is generally fixed clutter, sea clutter and meteorological clutter are generally random noise, and be owing to mixing easily think it is a target by mistake with the clutter echo, easy so related by the atural object mistake during Target Traversing ground clutter; When target is under extra large clutter or the meteorological clutter background, because the restriction of flight path branch number, may cause the flight path branch outcome is decoy, and true target can be lost.
Therefore, the problem of the losing tool for radar performance that solves under the target clutter background is of great significance, and this programme namely is based on such consideration and produces.
Summary of the invention
Technical matters to be solved by this invention is for the defective in the aforementioned background art and deficiency, and the implementation method of the many flight paths target following under a kind of clutter background is provided, and it can reduce the possibility of associated errors, reduces and follows the tracks of the possibility of losing.
The present invention is for solving above technical matters, and the technical scheme that adopts is:
A kind of optimum many flight paths branch target based on the clutter hum pattern is followed the tracks of implementation method, comprises the steps:
(1) full spatial domain is divided into N * M clutter hum pattern unit by distance and bearing;
(2) each clutter hum pattern unit is upgraded respectively by fixed clutter district and random noise district, and the some mark in fixed clutter district is renumberd;
(3) tracking target is picked out relevant clutter hum pattern unit;
(4) from the some mark of the relevant ripple door of tracking target, pick out fixed clutter according to a mark numbering, remaining some mark added up the clutter background density of judging target;
(5) determine different flight path branch situations according to target clutter background density: for not adopting entity point mark to carry out sub-Track In Track under the high density clutter background, adopt blind propelling row Track In Track; Follow the tracks of for being taken to many 4 entity point mark flight paths and 1 blind hairclipper flight path under the low-density clutter background.
After adopting such scheme, the present invention combines the technology of clutter map information extraction and the judgement of target clutter background, wherein, utilizes the clutter map information extraction technology, thereby can effectively obtain the feature of target radar return in the certain hour scope; Utilize clutter background density decision technology, can obtain accurately target clutter background density situation.After adopting such scheme, system will have real-time good, pass through the high characteristics of clutter success ratio.
Description of drawings
Fig. 1 is the invention thought schematic diagram of many flight paths of the present invention branch.
Fig. 2 is the process flow diagram of many flight paths of the present invention branch.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is elaborated.
As shown in Figure 1, it is a kind of invention thought schematic diagram of following the tracks of implementation method based on optimum many flight paths branch target of clutter hum pattern of the present invention, it is that the technology that clutter map information extraction and clutter background density are judged is combined, and be applied to target following under the clutter background, implementation step such as following, and can cooperate shown in Figure 2: (1) is divided into N * M clutter hum pattern unit with full spatial domain by distance and bearing, preserve fixed clutter district and random noise district in each clutter hum pattern unit, fixed clutter district and random noise district preserve the distance of corresponding some mark sum and each some mark separately, range spread, the orientation, the orientation broadening, the relevant information such as amplitude peak and average amplitude.
(2) after the orientation of clutter map unit is crossed in antenna scanning along the time, wherein some mark and fixed clutter district's point mark in front several historical antenna cycles are carried out the small echo door relevant, adopt some mark quality dependent threshold and n/m double threshold method to determine the fixed clutter in current antenna cycle, the point mark corresponding to these fixed clutters renumbers, its coding rule can artificially be set but notice that put mark with routine has obvious difference, fixed clutter is put the fixed clutter district that mark deposits the clutter hum pattern in, remaining some mark is added up number be saved to the random noise district.
When (3) target of following the tracks of being carried out many flight paths branch, at first determine relevant clutter hum pattern unit according to extrapolation point mark, from relevant clutter map unit, pick out the pre-reference point mark in the relevant ripple door, judge according to some mark numbering to weed out fixed clutter, add up obtaining target and whether be in high density clutter district or low-density clutter district for remaining pre-reference point mark.
(4) when target is in high density clutter district, adopt blind pushing away until go out the clutter district, when target is in low-density clutter district, adopt the highest 5 the sub-flight paths of branch to follow the tracks of processing, one of them sub-flight path is the blind knot fruit of target.
Above embodiment only for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of doing on the technical scheme basis all falls within the protection domain of the present invention.
Claims (2)
1. the optimum many flight paths branch target based on the clutter hum pattern is followed the tracks of implementation method, it is characterized in that: for not adopting entity point mark to carry out sub-Track In Track under the high density clutter background, adopt blind propelling row Track In Track; Follow the tracks of for being taken to many 4 entity point mark flight paths and 1 blind hairclipper flight path under the low-density clutter background.
2. the optimum many flight paths branch target based on the clutter hum pattern as claimed in claim 1 is followed the tracks of implementation method, it is characterized in that: based on the judgement of the clutter background density of clutter hum pattern.
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| CN 201210438349 CN102901961A (en) | 2012-11-05 | 2012-11-05 | Optimal multi-track branch target tracking implementation method based on clutter information diagram |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646235A (en) * | 2018-05-03 | 2018-10-12 | 西安电子工程研究所 | The method for spreading fixed clutter based on mark position polymerization identification space |
| CN109100696A (en) * | 2018-07-06 | 2018-12-28 | 西安电子科技大学 | Microinching target removing method based on point clutter figure |
| CN109613526A (en) * | 2018-12-10 | 2019-04-12 | 航天南湖电子信息技术股份有限公司 | A kind of point mark filter method based on support vector machines |
| CN109814071A (en) * | 2019-03-19 | 2019-05-28 | 安徽雷炎电子科技有限公司 | One kind is based on region thresholding method for rapidly converging and its application under complex environment |
| CN110426692A (en) * | 2019-07-20 | 2019-11-08 | 中国船舶重工集团公司第七二四研究所 | Irregular jittered dynamic middle repetition PD mode point mark extracting method |
| CN112014836A (en) * | 2020-09-21 | 2020-12-01 | 四川长虹电器股份有限公司 | Short-range personnel target tracking method based on millimeter wave radar |
| CN113820686A (en) * | 2021-10-19 | 2021-12-21 | 中安锐达(北京)电子科技有限公司 | Method for processing radar primary trace point based on track clutter generating map |
| CN117687018A (en) * | 2024-01-31 | 2024-03-12 | 四川省华盾防务科技股份有限公司 | Phased array beam tracking method, device, system and storage medium |
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2012
- 2012-11-05 CN CN 201210438349 patent/CN102901961A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646235A (en) * | 2018-05-03 | 2018-10-12 | 西安电子工程研究所 | The method for spreading fixed clutter based on mark position polymerization identification space |
| CN109100696A (en) * | 2018-07-06 | 2018-12-28 | 西安电子科技大学 | Microinching target removing method based on point clutter figure |
| CN109613526A (en) * | 2018-12-10 | 2019-04-12 | 航天南湖电子信息技术股份有限公司 | A kind of point mark filter method based on support vector machines |
| CN109814071A (en) * | 2019-03-19 | 2019-05-28 | 安徽雷炎电子科技有限公司 | One kind is based on region thresholding method for rapidly converging and its application under complex environment |
| CN109814071B (en) * | 2019-03-19 | 2023-08-29 | 安徽雷炎电子科技有限公司 | Regional threshold rapid convergence method based on complex environment and application thereof |
| CN110426692A (en) * | 2019-07-20 | 2019-11-08 | 中国船舶重工集团公司第七二四研究所 | Irregular jittered dynamic middle repetition PD mode point mark extracting method |
| CN110426692B (en) * | 2019-07-20 | 2021-02-26 | 中国船舶重工集团公司第七二四研究所 | Method for extracting repeat frequency PD mode point trace in stagger plus jitter |
| CN112014836A (en) * | 2020-09-21 | 2020-12-01 | 四川长虹电器股份有限公司 | Short-range personnel target tracking method based on millimeter wave radar |
| CN112014836B (en) * | 2020-09-21 | 2022-03-04 | 四川长虹电器股份有限公司 | Short-range personnel target tracking method based on millimeter wave radar |
| CN113820686A (en) * | 2021-10-19 | 2021-12-21 | 中安锐达(北京)电子科技有限公司 | Method for processing radar primary trace point based on track clutter generating map |
| CN117687018A (en) * | 2024-01-31 | 2024-03-12 | 四川省华盾防务科技股份有限公司 | Phased array beam tracking method, device, system and storage medium |
| CN117687018B (en) * | 2024-01-31 | 2024-04-19 | 四川省华盾防务科技股份有限公司 | Phased array beam tracking method, device, system and storage medium |
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