CN109031283A - A kind of ground air defense radar target type automatic identifying method - Google Patents
A kind of ground air defense radar target type automatic identifying method Download PDFInfo
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- CN109031283A CN109031283A CN201810565165.1A CN201810565165A CN109031283A CN 109031283 A CN109031283 A CN 109031283A CN 201810565165 A CN201810565165 A CN 201810565165A CN 109031283 A CN109031283 A CN 109031283A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007123 defense Effects 0.000 title claims abstract description 11
- 230000003471 anti-radiation Effects 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention relates to a kind of ground air defense radar target type automatic identifying methods, by the way that the height above sea level of target is compared with hostile nations aircraft maximum ceilings, the speed of target current point is compared with the target velocity upper limit at a slow speed, target velocity is compared with hostile nations' Ballistic Target reentry stage maximum speed and hostile nations' Ballistic Target reentry stage minimum speed, the vertical speed of target current point is compared with hostile nations' Ballistic Target reentry stage maximum vertical speed and hostile nations' Ballistic Target reentry stage minimum vertical speed, to carry out automatic identification to target type.
Description
Technical field
The invention belongs to radar system design fields, and in particular to a kind of ground air defense radar target type automatic identification side
Method.
Background technique
Ground air defense radar target type identification can be divided into manual identified and automatic identification two ways.
So-called manual identified refers to the parameters such as the speed that target is calculated according to radar track position coordinates, in conjunction with priori
The information of knowledge and higher level intelligence department carries out manual identified to target type, the disadvantage is that speed is slow, error is big, and when sky
When middle target lot number is more, it is difficult to meet system real time demand.
So-called automatic identification refers to the Model of Target Type Discrimination with building, provides mesh automatically by air situation processing computer
Target type attribute.
The automatic identification of target type is constantly being adjusted with the technological progress of aerial attacker and the variation of raid pattern
It is whole.Due to the difference of various countries' air defense operation theory, also it is not quite similar to target type division.
The present invention provides a kind of method for carrying out target type automatic identification based on construction subordinating degree function, meets radar system
System demand.
It is looked into, has no that technology related to this discloses.
Summary of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of ground air defense radar target type automatic identification
Method.
Technical solution
A kind of ground air defense radar target type automatic identifying method, it is characterised in that steps are as follows:
Step 1: first determining whether target height above sea level is eligible, HtFor the height above sea level of target current point；HmaxFor
Hostile nations' aircraft maximum ceiling, is set as 20000 meters herein；If Ht≥Hmax, 5 are gone to step, otherwise, goes to step 2；
Step 2:VtFor target velocity, VsFor the target velocity upper limit at a slow speed, it is set as 100m/s herein；If Vt≤Vs, then turn
Step 3；Otherwise 4 are gone to step；
Step 3: for Vt≤VsTarget, into special objective identifying processing:
Step 3a: firstly, HtFor the height above sea level of target current point, HzmaxFor hostile nations' helicopter maximum ceiling, herein
It is set as 6500 meters；If Ht≤Hzmax, go to step 3c, otherwise, temporarily assign target type be it is unknown, by manually further investigating and
Judgement；
Step 3c: if being all satisfied V in continuous 10 radar periods of targett≤ 20m/s then judges target for suspended matter；It is no
Then, judge target for helicopter；
Step 4: for Vt> VsTarget, into air-to-ground guided missile and fixed wing aircraft class target identification processing:
Step 4a: firstly, if satisfaction-Vkhmax≤Vth≤-Vkhmin, then 4b is gone to step, otherwise, tentatively judges that target is solid
Determine wing aircraft；Wherein, VthFor target vertical speed, VkhmaxFor hostile nations' air-to-ground guided missile maximum vertical speed, it is set as herein
1000m/s, VkhminFor hostile nations' air-to-ground guided missile minimum vertical speed, it is set as 200m/s herein；
Step 4b: if meeting Vbmin≤Vt≤Vbmax, then 4c is gone to step, otherwise, tentatively judges target for fixed wing aircraft；
Wherein, VtFor target velocity, VbmaxFor hostile nations' air-to-ground guided missile maximum speed, it is set as 2000m/s, V hereinbminIt is hostile
National air-to-ground guided missile minimum speed, is set as 150m/s herein；
Step 4c: tentatively judge that target for air-to-ground guided missile, goes to step 4d；
Step 4d: identify whether as ARM antiradiation missile:
Using ground photo rectangular coordinates system as coordinates computed system, the two o'clock (x of the target certain time interval is taken1,
y1,z1)、(x2,y2,z2), obtain the spatial movement linear equation of target:
Z=0 is enabled, landing point coordinates (x is obtained0,y0):
Calculate target point of impact (x0,y0) with radar site distance d:
If d≤Δ d, which suffers the target attack, can judge the target tentatively for ARM, Δ d takes 1km；
Step 5:VtFor target velocity；VdmaxFor hostile nations' Ballistic Target reentry stage maximum speed, it is set as herein
3000m/s；VdminFor hostile nations' Ballistic Target reentry stage minimum speed, it is set as 1000m/s herein；If6 are gone to step, otherwise, for the track of Ballistic Target cannot be confirmed as, then assigns target type unknown mark
Note；
Step 6:VhFor the vertical speed of target current point；VdhmaxFor hostile nations' Ballistic Target reentry stage maximum perpendicular speed
Degree, is set as 1500m/s herein；VdhminFor hostile nations' Ballistic Target reentry stage minimum vertical speed, it is set as 500m/ herein
s；If-Vdhmax≤Vh≤-Vdhmin, 7 are gone to step, otherwise, for the track of Ballistic Target cannot be confirmed as, then assigns target type
Unknown label；
Step 7: assigning target to Ballistic Target mark, if being continuously identified as Ballistic Target three times, confirm that target is bullet
Road target.
Beneficial effect
A kind of ground air defense radar target type automatic identifying method proposed by the present invention, beneficial effect and feature are as follows:
1) whole softwares are realized automatically, are not needed to increase additional hardware device, are reduced system cost；
2) calculation method is simple, and real-time is high；
3) transplantability is good, can be applied to a variety of application fields.
Detailed description of the invention
Fig. 1 Motion parameters process flow diagram
Fig. 2 special objective identifying processing flow chart
Fig. 3 air-to-ground guided missile and fixed wing aircraft class target identification processing flow chart
Fig. 4 ARM antiradiation missile impact point calculation figure
Specific embodiment
As needed, target type is divided into Ballistic Target, fixed wing aircraft (can be subdivided into mainframe, medium-sized machine, small
Type machine), air-to-ground guided missile (contain antiradiation missile), cruise missile, gyroplane (helicopter), suspended matter (balloon drifted by wind or passiveness
Interference stripe etc.), unknown type etc..
Target type discrimination is the biggish work of ambiguity, it is difficult to make accurate standard and highly effective
Method carries out target classification.
A kind of method that the present invention proposes automatic identification target type is the track parameter information provided according to radar, warp
The accumulation of dynamic data multicycle is crossed, efficiently extracts out the various characteristic parameters of target, comprehensive judgement target class on this basis
Type.
The present invention carries out target type discrimination according to the targetpath parameter of radar tracking, extracts from radar track parameter
Form clarification of objective parameter.Since the purposes of various aircraft is different, technical parameter is also different, but there is no stringent areas
Boundary, only one rough range, and the parameter area of all kinds of aircraft mutually overlaps.By analysis, all kinds of flights
The most significant feature of device is its flying height, speed etc., and opposing aerial attacker is to complete it to launch air raids task, and behavioural characteristic has
Apparent rule, does not have excessive unusual behavior generally.Therefore, it in type identification, chooses and factor outstanding is reflected to type
Type division is carried out as main identification factor.In this way, sufficiently reflecting the characteristic feature outstanding of certain type target, and press down
The interference of other types target signature processed, to obtain available type identification result.
Below by taking certain ground air defense radar system as an example, illustrate the embodiment of the invention:
(1) target type discrimination overall process process is described below, as shown in Figure 1:
1. first determining whether target height above sea level is eligible, HtFor the height above sea level of target current point；HmaxIt is hostile
State aircraft maximum ceiling is set as 20000 meters herein；If Ht≥Hmax, turn step 5, otherwise, turn step 2.For Ht≥
HmaxTarget, may be Ballistic Target；
2.VtFor target velocity, VsFor the target velocity upper limit at a slow speed, it is set as 100m/s herein.If Vt≤Vs, then turn the 3rd
Step；Otherwise turn step 4；
3. for Vt≤VsTarget, into special objective identifying processing；
4. for Vt> VsTarget, into air-to-ground guided missile and fixed wing aircraft class target identification processing；
5.VtFor target velocity；VdmaxHostile nations' Ballistic Target reentry stage maximum speed, is set as 3000m/s herein；
VdminHostile nations' Ballistic Target reentry stage minimum speed, is set as 1000m/s herein；IfTurn step 6,
Otherwise, turn step 7；
6.VhFor the vertical speed of target current point；VdhmaxHostile nations' Ballistic Target reentry stage maximum vertical speed, this
Place is set as 1500m/s；VdhminHostile nations' Ballistic Target reentry stage minimum vertical speed, is set as 500m/s herein；If
Vdhmax≤Vh≤-Vdhmin, turn step 8, otherwise, turn step 7.
7. then assigning target type unknown label the track that cannot be confirmed as Ballistic Target；
8. assigning target to Ballistic Target mark.If being continuously identified as Ballistic Target three times, being confirmed as target is trajectory
Target.
(2) special objective identification processing procedure is described below, as shown in Figure 2:
1. firstly, HtFor the height above sea level of target current point, HzmaxFor hostile nations' helicopter maximum ceiling, it is arranged herein
It is 6500 meters；If Ht≤Hzmax, turn step 3, otherwise, turn step 2；
2. being more than the target at a slow speed of hostile nations' helicopter maximum ceiling for flying height, temporarily assigning target type is not
It is bright, by manually further investigating and judging；
3. if be all satisfied V in continuous 10 radar periods of targett≤ 20m/s, then turn step 4；Otherwise, turn step 5；
4. judging target for suspended matter；
5. judging target for helicopter.
(3) air-to-ground guided missile and fixed wing aircraft class target identification processing process is described below, as shown in Figure 3:
1. firstly, if satisfaction-Vkhmax≤Vth≤-Vkhmin, then turn step 2, otherwise, turn step 4.Wherein, VthIt hangs down for target
Straight speed, VkhmaxFor hostile nations' air-to-ground guided missile maximum vertical speed, it is set as 1000m/s, V hereinkhminFor hostile nations' sky
Ground guided missile minimum vertical speed, is set as 200m/s herein；
2. if meet Vbmin≤Vt≤Vbmax, then turn step 3, otherwise, turn step 4.Wherein, VtFor target velocity, VbmaxFor
Hostile nations' air-to-ground guided missile maximum speed, is set as 2000m/s, V hereinbminFor hostile nations' air-to-ground guided missile minimum speed, this
Place is set as 150m/s；
3. tentatively judging that target for air-to-ground guided missile, turns step 5；
4. tentatively judging target for fixed wing aircraft.
5. identifying whether as ARM antiradiation missile, process flow is as follows:
As shown in figure 4, taking the target certain time interval using ground photo rectangular coordinates system as coordinates computed system
Two o'clock (x1,y1,z1)、(x2,y2,z2), obtain the spatial movement linear equation of target
Z=0 is enabled, landing point coordinates (x is obtained0,y0)
Calculate target point of impact (x0,y0) with radar site distance d
D≤Δ d is taken, then the radar most probable suffers the target attack, can judge the target tentatively for ARM, Δ d takes 1km.
Claims (1)
1. a kind of ground air defense radar target type automatic identifying method, it is characterised in that steps are as follows:
Step 1: first determining whether target height above sea level is eligible, HtFor the height above sea level of target current point；HmaxIt is hostile
State aircraft maximum ceiling is set as 20000 meters herein；If Ht≥Hmax, 5 are gone to step, otherwise, goes to step 2；
Step 2:VtFor target velocity, VsFor the target velocity upper limit at a slow speed, it is set as 100m/s herein；If Vt≤Vs, then go to step
3；Otherwise 4 are gone to step；
Step 3: for Vt≤VsTarget, into special objective identifying processing:
Step 3a: firstly, HtFor the height above sea level of target current point, HzmaxFor hostile nations' helicopter maximum ceiling, it is arranged herein
It is 6500 meters；If Ht≤Hzmax, 3c is gone to step, otherwise, temporarily imparting target type is unknown, by manually further investigating and judging；
Step 3c: if being all satisfied V in continuous 10 radar periods of targett≤ 20m/s then judges target for suspended matter；Otherwise, sentence
Disconnected target is helicopter；
Step 4: for Vt> VsTarget, into air-to-ground guided missile and fixed wing aircraft class target identification processing:
Step 4a: firstly, if satisfaction-Vkhmax≤Vth≤-Vkhmin, then 4b is gone to step, otherwise, tentatively judges target for fixed-wing
Aircraft；Wherein, VthFor target vertical speed, VkhmaxFor hostile nations' air-to-ground guided missile maximum vertical speed, it is set as herein
1000m/s, VkhminFor hostile nations' air-to-ground guided missile minimum vertical speed, it is set as 200m/s herein；
Step 4b: if meeting Vbmin≤Vt≤Vbmax, then 4c is gone to step, otherwise, tentatively judges target for fixed wing aircraft；Wherein,
VtFor target velocity, VbmaxFor hostile nations' air-to-ground guided missile maximum speed, it is set as 2000m/s, V hereinbminFor hostile nations' sky
Ground guided missile minimum speed, is set as 150m/s herein；
Step 4c: tentatively judge that target for air-to-ground guided missile, goes to step 4d；
Step 4d: identify whether as ARM antiradiation missile:
Using ground photo rectangular coordinates system as coordinates computed system, the two o'clock (x of the target certain time interval is taken1,y1,
z1)、(x2,y2,z2), obtain the spatial movement linear equation of target:
Z=0 is enabled, landing point coordinates (x is obtained0,y0):
Calculate target point of impact (x0,y0) with radar site distance d:
If d≤Δ d, which suffers the target attack, can judge the target tentatively for ARM, Δ d takes 1km；
Step 5:VtFor target velocity；VdmaxFor hostile nations' Ballistic Target reentry stage maximum speed, it is set as 3000m/s herein；
VdminFor hostile nations' Ballistic Target reentry stage minimum speed, it is set as 1000m/s herein；If Vdmin≤Vt≤Vdmax, go to step
6, otherwise, for the track of Ballistic Target cannot be confirmed as, then assign target type unknown label；
Step 6:VhFor the vertical speed of target current point；VdhmaxFor hostile nations' Ballistic Target reentry stage maximum vertical speed,
It is set as 1500m/s herein；VdhminFor hostile nations' Ballistic Target reentry stage minimum vertical speed, it is set as 500m/s herein；
If-Vdhmax≤Vh≤-Vdhmin, 7 are gone to step, otherwise, for the track of Ballistic Target cannot be confirmed as, then assigns target type not
Bright label；
Step 7: assigning target to Ballistic Target mark, if being continuously identified as Ballistic Target three times, confirm that target is trajectory mesh
Mark.
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