CN1178010A - Arrangement for the detection of targets - Google Patents
Arrangement for the detection of targets Download PDFInfo
- Publication number
- CN1178010A CN1178010A CN 96192418 CN96192418A CN1178010A CN 1178010 A CN1178010 A CN 1178010A CN 96192418 CN96192418 CN 96192418 CN 96192418 A CN96192418 A CN 96192418A CN 1178010 A CN1178010 A CN 1178010A
- Authority
- CN
- China
- Prior art keywords
- detector
- matrix
- picture
- probe unit
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention relates to an infrared sensor incorporating at least one detector (8, 9) by means of which the number of false alarms can be reduced by comparing image matrices successively generated in one revolution on the basis of prealarms generated in the image matrices by point target extractors (18, 19). Between these matrices generated in succession, differences are introduced by means of a different spectral response, polarization selection and parallax.
Description
The present invention relates to a kind of target detection unit, this device comprise one can be around the probe unit of a vertical at least substantially detection axis rotation, the focalizer that this probe unit is equipped with a detector and is used for focusing on to radiation detector, this radiation is such as being the infrared radiation that is sent or reflected by target; This device also comprises a point target extraction apparatus, and it handles the two dimensional image matrix sequence X of the representative device surrounding environment that is generated by detector
1, X
2... thereby, at image array X
1, X
2... one of in each point target of being detected predict.
A kind of device of the type is known, for example EP-B-0.205.794.The purpose of point target extraction apparatus is the false alarm quantity that reduces by the probe unit generation.If there is not the point target extraction apparatus, whenever rotate a circle, detector can produce several thousand times false alarm usually.If the point target extraction apparatus has all known in this technology features, this quantity can reduce to whenever to circle has only false alarm several times.Yet nonetheless this device still is unsuitable for the operation automatically of advocating peace certainly of armament systems.
By requiring once prediction in the rotation several times continuously, can reduce the quantity of false alarm.Its shortcoming is to have lost the important reaction time.Device according to the present invention has been eliminated this shortcoming and it is characterized in that probe unit is designed to one week of revolution produce two image arrays at least, combinational circuit also is provided, if at least two image arrays, for the matrix unit of correspondence has produced prediction, then combinational circuit produces result of detection.
First embodiment according to device of the present invention is characterised in that probe unit comprises that one first detector produces image array X in order to whenever to circle
iProduce image array Y in order to whenever to circle with one second detector
i, the elevation direction of the fenestra of two detectors and angle are about the same at least; If for the picture matrix sequence X
i, Y
i, X
I+1, Y
I+1In corresponding matrix unit produce continuously at least two predictions, then combinational circuit produces result of detection.
Aspect this, if even the elevation angle of two detectors is identical with aperture angle, but still observe a potential target by different way, this is favourable.Therefore, a preferred embodiment is characterised in that the spectral response of first detector is different from the spectral response of second detector.Consider the spectrum window in the atmosphere, a specific embodiments is characterised in that the spectrum sensitivity of first detector has maximal value in the 3-5 micrometer range and second detector has maximal value in the 8-12 micrometer range.
A more excellent embodiment utilizes false alarm, and particularly those false alarms that caused by the sunlight of for example sea surface reflection to more responsive this fact in some polarization direction, is characterized in that first detector and second detector all comprise a polariscope.A specific embodiments is characterised in that at least one polariscope and provides adjusting gear to make the pre-alarm minimum number to adjust polariscope.
If false alarm is by near target, cause that as bird another more excellent embodiment then of the present invention is of great use.Thereby it is characterized in that first and second detectors are placed side by side causes that with the parallax that produces near target at least the point target extraction apparatus produces the forecast to non-unit matrix unit, and alert this can not continue to form result of detection by combinational circuit.
Having more creationary embodiment according to one of the present invention, is possible only whenever be circled by a detector to produce two picture matrixs for a selected azimuthal bin at least.This with regard to the installation that requires probe unit make it can around with the rotation of the vertical substantially elevation axis of detection axis and detector sight line.This creationary embodiment is characterised in that after producing each picture matrix, rotate around elevation axis to make can produce the next image array of selecting azimuthal bin after rotating half cycle around detection axis.
In a special preferred embodiment, be characterised in that with so a kind of device that is designed to the basis detector places reference axis other to produce the parallax near target at least at the image array that produces continuously.
Below describe the present invention with reference to the accompanying drawings, wherein:
Fig. 1 represents a possibility embodiment of the present invention;
Fig. 2 illustrate of the present invention one may structure;
Fig. 3 represents a block diagram of the present invention;
Fig. 1 represents a possibility embodiment according to device of the present invention, and wherein probe unit 1 is equipped with two windows 2,3, and detector is positioned at thereafter and is sent or radiation reflected by target to receive.At work, probe unit 1 is around vertical sounding axle 4 rotations of erecting in base 5.If the present invention is used for movable body, steamer for example, base 5 is installed on the platform stably that does not herein show usually.Base 5 comprises that the drive unit that is used for rotated detection axle 4 and revolving joint (not shown) and is connected supply voltage and export signal by the detector generation to transmit command signal.One more advantageous method be to place probe unit 1 so that it can be observed under selected elevation direction like this around elevation axis 6 rotations.In its embodiment that simplifies most, probe unit 1 be designed to that elevation drive 7 rotates two detectors simultaneously so that they to look up direction always identical.
Fig. 2 illustrates a kind of horizontal cross-section that may structure of probe unit 1, and wherein window 2,3rd, and as lens, they are except the inside of abundant sealing detection unit 1, and the image that also forms the peripheral region is to offer detector 8,9.Auxiliary optical component 10,11 as automatic light hurdle and polariscope, can place between window 2,3 and the detector 8,9.Detector 8,9 certainly is suitable for any wavelength that can penetrate atmosphere.According to the present invention, 8,9 pairs of sensitive for infrared radiation of detector and be arranged as linear array, the approximate detection axis 4 that is parallel to of its longitudinal axis.In infrared application, lens 2,3 preferably design with germanium single crystal.Whenever circle, detector 8 can produce all or part of peripheral region, such as the picture matrix X of selected azimuthal bin
i, the one dimension of picture matrix is to be obtained by linear array, the target direction angle that another dimension expression is obtained by the scanning campaign that forms around detection axis 4 rotations.With similar methods, detector 9 produces figure angular moment battle array Y
iBy pretreater 12,13, the revolving joint in detection axis 4 and the base 5, the output signal of detector 8,9 is transmitted to following carrier-borne (deck) processor further to handle.Pretreater 12,13 comprises known function in this technical field, as the preposition amplification and the filtering of the signal that generates by detector, the multiplication of these signals so that they transmit by revolving joint and, if necessary, to the control of auxiliary optical component.
Fig. 3 represents a possible block diagram of the present invention, and wherein detector 8,9 sends its data to processor 17 by pretreater 12,13.Digital signal processor 17 comprises point target extraction apparatus known in the present technique, in case whenever circle or turn over a selected azimuthal bin, at the picture matrix X that produces by detector 8
iIn detect point target, then point target extraction apparatus 18 produces prediction at its output terminal.Processor 17 also comprises second, normally identical point target extraction apparatus 19, in case whenever circle or turn over a selected azimuthal bin, at the picture matrix Y that produces by detector 9
iIn detect point target, then point target extraction apparatus 19 produces prediction at its output terminal.If at picture matrix X
iAnd Y
iIn produced a prediction for two corresponding matrix units, that is to say that two detectors observe a target in same direction, then the prediction that is produced by point target extraction apparatus 18,19 is made up in combinational circuit 20, at the output terminal generation result of detection of combinational circuit 20.
When the reaction time does not affect adversely, such binary detector and with the combinational circuit of its coupling since for example the prediction that produces of noise can not cause this fact of result of detection to reduce the possibility of false alarm.By selecting dissimilar detectors so that they to the reaction difference of sunlight reflected on the water surface for example, this can further reduce the possibility of false alarm.This has reduced in this case the danger that two point target extraction apparatuss all produce prediction.A particularly advantageous scheme in this case is the spectrum window of considering in the atmosphere, and two detectors are selected different spectral responses.By selecting detector 8 in the 3-5 micrometer range, to reach the effect that needs with the sensitivity of detector 9 in the 8-12 micrometer range.Combinational circuit 20 can improve like this, have only when with the density of related two the corresponding matrix units of prediction when associated with each other, just to produce result of detection with the mode of the consistent in density of re-set target.This can be one piece of guided missile based on for example hypothetical target, and its nose cone has the temperature in projecting zone because of the surface heating.The interrelated mode of the infrared intensity of two different SPECTRAL REGION can obtain by technical known nose cone temperature.
More simple and efficient methods that make two detectors produce different responses be with polariscope as auxiliary optical component 10,11, its orientation is quadrature for example.Be to guarantee optimum efficiency, at least one polariscope is adjustable, for example by one source mechanism is arranged, and it adjusts polariscope so that the pre-alarm of whenever circling is minimum in working order the time.Particularly the false alarm that is caused by water-reflected sunlight is suppressed effectively.
The problem that another is widely known by the people in the present technique, promptly near the bird false alarm that flight causes installing is offset effectively by this device, and this is because owing to parallax, for matrix X
iAnd Y
iIn different matrix units, bird causes prediction, consequently combinational circuit 20 can not produce testing result.If two detectors have different spectral responses, perhaps this be disadvantageous sometimes.At least avoid this problem can pass through producing matrix X for a selected orientation
i, Y
iAfterwards, around elevation axis 6 rotated detection unit 1, thereby after changeing about half cycle, determine matrix X once more
i, Y
i, after this process, detector 8,9 reality have changed the position.This just causes whenever circling and obtains four matrixes, and they are in corresponding spectral range, and it is right to be combined in combinational circuit 20.And, for different spectral ranges, can compare the radiation intensity value once more.Because the mirror image of the matrix that the matrix that is so alternately produced by a detector always produces previously, thereby still to pay certain cost.
Point target extraction apparatus 18,19 can be combined as a point target extraction apparatus, it on the basis of timesharing, the signal of alternate treatment detector 8,9 output.By at each half cycle around elevation axis rotated detection unit 1, also can omit detector 9 and pretreater 13.Whenever circle, this method produces two matrixes, and they show parallax; Near the false alarm of object this method prevents to come from.Can also change the polarization direction and/or change spectrum sensitivity, so that whole described improvement realizes on the basis of having only a detector, though this method only is applicable to the selected azimuthal bin less than 180 degree.
Claims (12)
1. target detection unit, comprise one can be around the probe unit of vertical at least substantially detection axis rotation, the focalizer that this probe unit is equipped with a detector and is used for focusing on to radiation detector, this radiation is such as being the infrared radiation that is sent or reflected by target, this target detection unit also comprises a point target extraction apparatus, handles the two-dimensional image matrix sequence X that is produced and represented this device surrounding environment by detector
1, X
2..., be used for each picture matrix X
1, X
2In the point target that detects predict, it is characterized in that, probe unit is designed to one week of revolution generate at least two picture matrixs, and provide a kind of combinational circuit, if for two predictions of at least two picture matrixs generations corresponding to matrix unit, then this combinational circuit produces result of detection.
2. device as claimed in claim 1 is characterized in that, probe unit comprises the picture matrix X of generation that is used for whenever circling
iFirst detector and one be used for whenever circling and produce a picture matrix Y
iSecond detector, the fenestra of two detectors look up direction and angle is about the same at least, if for the picture matrix sequence X
i, Y
i, X
I+1, Y
I+1In corresponding matrix unit produce continuously at least two predictions, then combinational circuit produces result of detection.
3. device as claimed in claim 2 is characterized in that the spectral response of first detector is different from the spectral response of second detector.
4. device as claimed in claim 3 is characterized in that the spectrum sensitivity of first detector and second detector has maximal value respectively in 3-5 micrometer range and 8-12 micrometer range.
5. device as claimed in claim 2 is characterized in that first detector and second detector all have a polariscope.
6. device as claimed in claim 5, thus it is characterized in that at least one polariscope has adjusting gear to adjust the minimum number that polariscope makes pre-alarm.
7. device as claimed in claim 2 is characterized in that first and second detectors are arranged side by side so that near at least target is produced parallax.
8. device as claimed in claim 1 is characterized in that the installation of probe unit can be rotated it at least around elevation axis, and this location is basically perpendicular to the sight line of detection axis and at least one detector at least.
9. device as claimed in claim 8, it is characterized in that probe unit comprises that a detector is used for whenever circling and produces two picture matrixs of a selected azimuthal bin, in this process, after each picture matrix produces, rotate around elevation axis, its rotation mode makes and produce the next picture matrix of selecting azimuthal bin after detection axis is revolved half cycle.
10. device as claimed in claim 9, it is characterized in that detector place reference axis other with to the picture matrix of continuous generation at least near target produce parallax.
11., it is characterized in that probe unit comprises the polariscope that an energy is adjusted for the picture matrix of each generation as the device of claim 10.
12., it is characterized in that probe unit comprises the light filter that places detector to be used for the picture matrix of each generation before as claim 10 or 11 any one devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96192418 CN1178010A (en) | 1995-03-06 | 1996-03-01 | Arrangement for the detection of targets |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL9500432 | 1995-03-06 | ||
| CN 96192418 CN1178010A (en) | 1995-03-06 | 1996-03-01 | Arrangement for the detection of targets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1178010A true CN1178010A (en) | 1998-04-01 |
Family
ID=5128261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96192418 Pending CN1178010A (en) | 1995-03-06 | 1996-03-01 | Arrangement for the detection of targets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1178010A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408042A (en) * | 2010-09-22 | 2012-04-11 | 东芝电梯株式会社 | Elevator Docking Device |
| CN108317903A (en) * | 2018-04-20 | 2018-07-24 | 中蕊（武汉）光电科技有限公司 | A kind of solid violet is outer, infrared compound guided missile prior-warning device |
-
1996
- 1996-03-01 CN CN 96192418 patent/CN1178010A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408042A (en) * | 2010-09-22 | 2012-04-11 | 东芝电梯株式会社 | Elevator Docking Device |
| CN102408042B (en) * | 2010-09-22 | 2014-05-07 | 东芝电梯株式会社 | Elevator Docking Device |
| CN108317903A (en) * | 2018-04-20 | 2018-07-24 | 中蕊（武汉）光电科技有限公司 | A kind of solid violet is outer, infrared compound guided missile prior-warning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4952911A (en) | Scanning intrusion detection device | |
| CN2773714Y (en) | Laser scanning detector | |
| US5151822A (en) | Transform digital/optical processing system including wedge/ring accumulator | |
| US4967183A (en) | Method of intrusion detection over a wide area | |
| EP0388658B1 (en) | Color balanced image detector system | |
| US4628206A (en) | Visible-UV horizon sensor | |
| JP2002525685A (en) | Programmable lens assembly and optical system incorporating the same | |
| US20050167570A1 (en) | Omni-directional radiation source and object locator | |
| US4058726A (en) | Radiation detector | |
| JPH0367112A (en) | System for measuring position of at least one target for emitting radiation | |
| US5015844A (en) | Optical surveillance sensor apparatus | |
| CN109655931A (en) | Millimeter wave/THz wave imaging device and detection method to human body or article | |
| EP0041146A1 (en) | Method and apparatus for determination of angle incidence of electromagnetic energy | |
| CN1178010A (en) | Arrangement for the detection of targets | |
| EP0298059B1 (en) | Device for the selective detection of objects | |
| RU2131133C1 (en) | Target detection device | |
| RU2321016C1 (en) | Circular view electro-optic device | |
| US3234845A (en) | Apparatus for optically correlating the alignment of a transparency and an object | |
| US3508068A (en) | Optical strip mapping system | |
| AU779584B2 (en) | In-action boresight | |
| US5434406A (en) | Hemispheric matrixsized imaging optical system | |
| RU2189049C1 (en) | Wide-field infrared system of circular scanning | |
| JPH07244145A (en) | Image target detection apparatus | |
| CN106444854A (en) | Closed loop control system for heliostats | |
| RU2263931C1 (en) | Device for observing objects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |