CN106950527A - A kind of Pulse Signal Sorting method under multi-baseline interference instrument direction finding system - Google Patents
A kind of Pulse Signal Sorting method under multi-baseline interference instrument direction finding system Download PDFInfo
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- CN106950527A CN106950527A CN201710245129.2A CN201710245129A CN106950527A CN 106950527 A CN106950527 A CN 106950527A CN 201710245129 A CN201710245129 A CN 201710245129A CN 106950527 A CN106950527 A CN 106950527A
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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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
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- Instruments For Measurement Of Length By Optical Means (AREA)
- Measurement Of Radiation (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of Pulse Signal Sorting method under multi-baseline interference instrument direction finding system, specifically include：A, calculating most Long baselines phase true value and corresponding angle；B, each baseline phase measured value of calculating and most Long baselines phase true value dispersion degree deviation cost function, and indicate whether dispersion degree meets phase error thresholding；C, judge whether each baseline phase measured value forms echo signal direction finding peak value, if it is, determining the incident angle that direction finding peak value corresponding angle is signal, into step d, otherwise judge that not yet in effect detect receives radiation source, terminate this sorting；D, orrection phase place error threshold, extract the pulse train progress Pulse Signal Sorting that the corresponding dispersion degree of incident angle meets phase error thresholding after amendment.This method can be on the premise of radiation source direction finding fuzzy result be avoided, it is ensured that the integrality of pulse train, is conducive to rear end further to carry out signal sorting.
Description
Technical field
The present invention relates to the pulse signal that passive electronic is scouted under field, especially a kind of multi-baseline interference instrument direction finding system
Method for separating.
Background technology
In passive electronic scouting field, parameter measurement and direction finding first typically are carried out to pulse train, overall pulse is formed and retouches
Word is stated, according to the direction finding angle more than direction finding aggregation result or direction finding histogram analysis signal, the pulse sequence of the angle is further done
Row parameter attribute is sorted, i.e., usually said Pulse Signal Sorting.Due to first having separated the direction finding angle of multi signal, signal sorting
Relatively easily.Multi-baseline interference instrument is (see document：Phase-interfer-ometer direction-finding Position Research, Yuan Xiaokang；Shanghai space flight, 1999,3,1-
7) it is widely used in passive electronic direction detection, high-precision direction finding can be realized by Long baselines, but interferometer direction finding is usually
It is possible to occur what is obscured.Particularly in practical engineering application, because of factors such as signal to noise ratio reductions, phase error is caused to increase,
It is easier to occur direction finding to obscure, that is, there are multiple direction finding results may.When being such as gathered in the umber of pulse of a direction finding angle very little,
System will be considered that number of pulses is not up to threshold requirement and ignored, and scouting result is not exported.But when in the fuzzy angle of some direction finding
If upper aggregation umber of pulse is too many, system will export the direction finding result of falseness, and this is unwilling to receive.
Without loss of generality, according to phase error distribution characteristics, it will be assumed that direction finding statistics obtains a direction finding angle true value,
And several direction findings obscure angle value, and it is relatively more to meet the umber of pulse of true value, other direction findings obscure in angle or it is many or
Rarer pulse.In order to avoid the direction finding result of mistake as far as possible, there is scholar to propose by the analysis to many baseline phase dispersions
Its cost function is calculated, cost function is compared with pre-determined threshold, so that it may which the result big to fuzzy possibility is recognized and picked
Except (see document：A kind of improved Correlation Interferometer Direction Finding Algorithm, Gong Juntao, gold-tinted is bright, Gao Youbing；Electronic information countermeasure techniques,
2016,31 (1), 4-7).In order to ensure that preferable direction finding obscures inhibition, strict cost function thresholding, this certainty are set
It can cause to reject more number of pulses.To rejecting part, equivalent to there occurs missing pulse, when missing pulse is serious, pulse sequence
Row integrality can be deteriorated, and pulse train feature will be difficult to correct extraction, and this is also the situation for being unwilling to receive.
In summary, currently for the reconnaissance system of multi-baseline interference instrument direction finding, it is difficult to take into account and avoid direction finding fuzzy, complete
Abstraction sequence feature.
The content of the invention
The technical problems to be solved by the invention are：It both can effectively evade survey there is provided one kind for above-mentioned problem
To fuzzy, pulse train can be taken into account again completely, under a kind of multi-baseline interference instrument direction finding system for occurring without maximum probability missing pulse
Pulse Signal Sorting method.
The technical solution adopted by the present invention is as follows：
A kind of Pulse Signal Sorting method under multi-baseline interference instrument direction finding system, is specifically included,
A, calculating most Long baselines phase true value and corresponding angle；
B, each baseline phase measured value of calculating and most Long baselines phase true value dispersion degree deviation cost function, and indicate
Whether dispersion degree meets phase error thresholding；
C, judge whether each baseline phase measured value forms echo signal direction finding peak value, if it is, determining direction finding peak value pair
The incident angle for answering angle to be signal, into step d, otherwise judges that not yet in effect detect receives radiation source, terminates this sorting；
D, orrection phase place error threshold, extract the corresponding dispersion degree of incident angle and meet phase error thresholding after amendment
Pulse train carries out Pulse Signal Sorting.
Further, whether the number of pulses for meeting phase error thresholding by statistical straggling degree in step c reaches arteries and veins
Number threshold value is rushed to judge whether each baseline phase measured value forms echo signal direction finding peak value.
Further, whether the conventional number that can also meet phase error thresholding in step c by statistical straggling degree reaches
Pulse number threshold value judges whether each baseline phase measured value forms echo signal direction finding peak value.
Further, phase error thresholding is amplified in the step d.
Further, phase error thresholding can be also abandoned in the step d, the corresponding all pulse sequences of incident angle are extracted
Row carry out Pulse Signal Sorting.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：Determine echo signal direction finding peak
It is worth after corresponding incident angle, orrection phase place error threshold, extracts the corresponding dispersion degree of incident angle and meet phase after amendment
The pulse train of error threshold is sorted, can be on the premise of radiation source direction finding fuzzy result is avoided, it is ensured that pulse train
Integrality, is conducive to rear end further to carry out signal sorting.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, the pulse signal point that wherein Fig. 1 provides for the present invention
Choosing method flow chart.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose
Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics
.
As shown in figure 1, a kind of Pulse Signal Sorting method under multi-baseline interference instrument direction finding system, is specifically included,
A, calculating most Long baselines phase true value and corresponding angle；
B, each baseline phase measured value of calculating and most Long baselines phase true value dispersion degree deviation cost function, and indicate
Whether dispersion degree meets phase error thresholding；
C, judge whether each baseline phase measured value forms echo signal direction finding peak value, if it is, determining direction finding peak value pair
The incident angle for answering angle to be signal, into step d, otherwise judges that not yet in effect detect receives radiation source, terminates this sorting；
D, orrection phase place error threshold, extract the corresponding dispersion degree of incident angle and meet phase error thresholding after amendment
Pulse train carries out Pulse Signal Sorting.
The existing algorithm that ambiguity solution algorithm that this method is related to, error cost function are calculated refers to other technologies document
(for example：A kind of " improved Correlation Interferometer Direction Finding Algorithm " Gong Juntao, gold-tinted is bright, Gao Youbing；Electronic information countermeasure techniques,
2016,31 (1), 4-7).
Whether the number of pulses for meeting phase error thresholding by statistical straggling degree in the step c reaches pulse number
Threshold value judges whether each baseline phase measured value forms echo signal direction finding peak value；Also phase can be met by statistical straggling degree
Whether the conventional number of position error threshold reaches pulse number threshold value to judge whether each baseline phase measured value forms echo signal
Direction finding peak value.
Orrection phase place error threshold in the step d, extracts the corresponding dispersion degree of incident angle and meets phase after amendment
The pulse train of error threshold carries out Pulse Signal Sorting.When amplifying phase error thresholding, dispersion degree meets phase after amendment
The pulse train quantity of error threshold becomes many, and phase error thresholding can be also abandoned in step d, extracts incident angle corresponding all
Pulse train carries out Pulse Signal Sorting.Radiation source direction finding fuzzy result can avoided by amplifying or abandoning phase error thresholding
Under the premise of, it is ensured that the integrality of pulse train.
The pulse number threshold value need to be set according to the concrete condition of Reconnaissance system, and Gao Zhongying signal pulse number threshold value can
Bigger numerical is set to, such as 1KHz repetition signal, pulse number threshold value is set to 800, it is allowed to 20% pulse missing.When
Signal is not that Gao Zhongying signal is not even continuously to detect the time receiving, and pulse number threshold value can be arranged to compared with fractional value.
The invention is not limited in foregoing embodiment.The present invention, which is expanded to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (5)
1. a kind of Pulse Signal Sorting method under multi-baseline interference instrument direction finding system, it is characterised in that including,
A, calculating most Long baselines phase true value and corresponding angle；
B, each baseline phase measured value of calculating and most Long baselines phase true value dispersion degree deviation cost function, and indicate discrete
Whether degree meets phase error thresholding；
C, judge whether each baseline phase measured value forms echo signal direction finding peak value, if it is, determining direction finding peak value corresponding angles
The incident angle for signal is spent, into step d, otherwise judges that not yet in effect detect receives radiation source, terminates this sorting；
D, orrection phase place error threshold, extract the pulse that the corresponding dispersion degree of incident angle meets phase error thresholding after amendment
Sequence carries out Pulse Signal Sorting.
2. the Pulse Signal Sorting method under a kind of multi-baseline interference instrument direction finding system according to claim 1, its feature
Be, the number of pulses that phase error thresholding is met by statistical straggling degree in step c whether reach pulse number threshold value come
Judge whether each baseline phase measured value forms echo signal direction finding peak value.
3. the Pulse Signal Sorting method under a kind of multi-baseline interference instrument direction finding system according to claim 1, its feature
It is whether the conventional number that can also meet phase error thresholding in step c by statistical straggling degree reaches pulse number threshold value
To judge whether each baseline phase measured value forms echo signal direction finding peak value.
4. the Pulse Signal Sorting method under a kind of multi-baseline interference instrument direction finding system according to claim 1, its feature
It is to amplify phase error thresholding in the step d.
5. the Pulse Signal Sorting method under a kind of multi-baseline interference instrument direction finding system according to claim 1, its feature
It is that phase error thresholding can be also abandoned in the step d, extracts the corresponding all pulse trains of incident angle and enter horizontal pulse letter
Number sorting.
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| CN111487584A (en) * | 2020-04-20 | 2020-08-04 | 中国航天科工集团八五一一研究所 | Pulse screening method based on time slice |
| CN114355280A (en) * | 2022-03-18 | 2022-04-15 | 中国电子科技集团公司第二十九研究所 | Multi-sensor composite array antenna arrangement and multi-information fusion sorting angle measurement method |
| CN114428225A (en) * | 2022-04-06 | 2022-05-03 | 中国电子科技集团公司第二十九研究所 | Multi-radiation-source arrival angle measuring method and device based on quasi-matched filtering |
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