CN110119571A - The inclined emulation mode of infrared drawing of IR point source bait bullet - Google Patents
The inclined emulation mode of infrared drawing of IR point source bait bullet Download PDFInfo
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- CN110119571A CN110119571A CN201910389598.0A CN201910389598A CN110119571A CN 110119571 A CN110119571 A CN 110119571A CN 201910389598 A CN201910389598 A CN 201910389598A CN 110119571 A CN110119571 A CN 110119571A
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Abstract
The invention discloses the inclined emulation modes of infrared drawing of IR point source bait bullet, it is related to aerial vehicle simulation technical field, the Standard Ratio characteristic curve for determining IR point source bait bullet is calculated first, to obtaining multiple fitting functions after the curve segmentation, it obtains drawing bias partially according to drawing to persist in asking draw to the parameter in curve, finally is fitted to obtain the inclined curve of drawing of time domain according to fitting function and drawing bias.The inclined emulation mode of infrared drawing of IR point source bait bullet of the invention can will carry out IR point source bait bullet drawing inclined emulation, so that simulation result can be more close to real scene.
Description
Technical field
The present invention relates to aerial vehicle simulation technical fields, more particularly to the infrared drawing side of emulation partially of IR point source bait bullet
Method.
Background technique
With the fast development of computer technology, digital simulation technique is obtained in weaponry field with its various advantage
It is widely applied.Accurate emulation mode and model are established, emulation can be carried out to IR point source bait bullet and is estimated, to novel force
The research of device equipment is significant.
However, the infrared characteristic of IR point source bait bullet be not it is completely specified, with the combustion characteristics of bait bullet
Influence can generate different degrees of fluctuation, it is therefore desirable to draw inclined emulation to IR point source bait bullet, promoted simulation result with
The similarity of actual scene.
Summary of the invention
The embodiment of the invention provides the inclined emulation modes of infrared drawing of IR point source bait bullet, can solve in the prior art
There are the problem of.
The present invention provides the inclined emulation modes of infrared drawing of IR point source bait bullet, method includes the following steps:
The standard pyranometer distribution curve of IR point source bait bullet is obtained by calculation；
Standard pyranometer distribution curve is segmented, the fitting function of each segmentation, including ignition section fitting function are obtained
With burning zone fitting function；
It persists in asking according to drawing, to the light-off time, combustion peak and firing duration of standard pyranometer distribution curve
Draw partially, obtain corresponding drawing bias, including light-off time draws bias, combustion peak that bias and firing duration is drawn to draw partially
Value；
Using the initial value of standard pyranometer distribution curve and a certain range of random value of final value as drawing inclined initial value
And final value, according to the inclined initial value of the drawing, inclined final value, drawing bias and fitting function are drawn, fitting obtains the inclined curve of drawing of time domain.
The inclined emulation mode of infrared drawing of IR point source bait bullet in the present invention calculates determine IR point source bait bullet first
Standard Ratio characteristic curve, to obtaining multiple fitting functions after the curve segmentation, according to draw persist in asking to the parameter in curve into
It goes to draw and obtains drawing bias partially, finally be fitted to obtain the inclined curve of drawing of time domain according to fitting function and drawing bias.Of the invention is infrared
The inclined emulation mode of infrared drawing of point source bait bullet can will carry out IR point source bait bullet drawing inclined emulation, so that simulation result energy
Enough more close to real scene.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the inclined emulation mode of infrared drawing of IR point source bait bullet provided in an embodiment of the present invention；
Fig. 2 is the infrared flare standard pyranometer distribution curve being calculated；
Fig. 3 is the inclined curve of drawing for the infrared flare time domain that emulation obtains.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig.1, the present invention provides the inclined emulation mode of infrared drawing of IR point source bait bullet, this method includes following step
It is rapid:
Step 1, to the certain types of IR point source bait bullet of Mr. Yu, it is bent that the distribution of its standard pyranometer is obtained by calculation
Line, as shown in Figure 2；
Step 2, it is segmented according to the feature of standard pyranometer distribution curve, obtains the piecewise fitting letter of each segmentation
Number, including ignition section fitting function and burning zone fitting function；
Step 3, it persists in asking according to drawing, the light-off time, combustion peak and burning of standard pyranometer distribution curve is held
The continuous time draw partially, obtains corresponding drawing bias, including when light-off time drawing bias, combustion peak drawing bias and combustion continuation
Between draw bias, specific to draw folk prescription formula, which be standard value, × (100 ± draws inclined parameter) %；
Step 4, the ambiguity of the inclined parameter of drawing is considered, with the initial value of standard pyranometer distribution function and final value ± α %
Random value in section carries out the drawing bias that step 3 obtains inclined time-domain curve is drawn to be fitted, obtain as inclined initial value and final value is drawn
To the inclined curve of drawing of time domain.The step includes following sub-step:
Sub-step 1 draws bias and light-off time according to the inclined initial value of drawing in step 4 and the combustion peak in step 3
Bias is drawn, is fitting prototype with the ignition section fitting function in step 2, fitting obtains ignition section radiation intensity and draws inclined curve；
Sub-step 2, when drawing bias and combustion continuation according to the inclined final value of drawing in step 4 and the combustion peak in step 3
Between draw bias, be fitting prototype with the burning zone fitting function in step 2, fitting obtains burning zone radiation intensity and draws inclined curve；
Sub-step 3 draws inclined curve and burning zone radiation in obtained ignition section radiation intensity after sub-step 1 and 2
Intensity draws in inclined curve and noise is added, so that simulation result more radiates the combustion case of practical bait bullet；
The ignition section radiation intensity that noise is added is drawn inclined curve and burning zone radiation intensity that inclined curve is drawn to spell by sub-step 4
It is combined, in split point, i.e. combustion peak draws sampling at left and right sides of bias, to be smoothed to the curve after split,
Obtain the inclined curve of drawing of time domain, effect draws inclined model as shown in Figure 3 to get having arrived satisfactory bait bullet radiation intensity.
The calculating process of IR point source bait bullet standard pyranometer is as follows:
IR point source bait bullet burn when to the gross energy of external radiation be Q, then the radiation intensity I of IR point source bait bullet can
To pass through total radiation energy QrIt is obtained divided by 4 π:
For QrCalculating, according to law of conservation of energy it is known that IR point source bait bullet burn when to external radiation energy
Amount only burning generate gross energy a part, if Q indicate IR point source bait bullet generated in entire combustion process it is total
Energy, drIndicate static radiation coefficient, then available according to law of conservation of energy:
Qr=drQ
The gross energy Q that IR point source bait bullet generates in combustion can be calculated by following formula:
In formulaIndicate the quality combustion speed of IR point source bait bullet, HCFor unit quality IR point source bait ammunition
The heat that agent generates when burning, for the medicament of different ratio, its heat generated can obtain data by experiment.
To sum up standard pyranometer formula are as follows:
For specific wavelength λ1~λ2The radiation intensity that IR point source bait bullet burns in wave bandAccording to Planck public affairs
Formula and Stefan-Boltzmann law are available:
WhereinFor the radiation efficiency in the wave band:
Wherein c1For first radiation constant, numerical value is 3.7417749 × 10-16W·m2, c2For second radiation constant, numerical value
For 0.01438769mK,Indicate the emissivity in selected emulation wave band, T is temperature when bait bullet burns, and ε is hair
Penetrate rate, for the flame of IR point source bait bullet close to 1, σ be Stefan-Boltzmann constant.
The IR point source bait bullet of stationary state or low-speed motion mainly passes through in burning transmits energy outside radiation direction,
And the major part that relative atmospheric is generated when pyrotechnic compound burns under the action of air blast with the IR point source bait bullet of high-speed motion
Energy loss causes radiation energy when burning to reduce.
In order to reflect influence of the air velocity to IR point source bait bullet radiation intensity, velocity coeffficient d is introducedw, it is used to table
The ratio of radiation intensity peak value when showing the IR point source bait bullet radiation intensity peak value and static combustion of Dynamic Burning.IR point source
The velocity coeffficient d of bait bulletwWith the variation of speed, in a dynamic condition, radiation intensity sharply declines, and it is quiet to be down to sea level
/ 10th of state radiation intensity.
Then bait bullet radiation intensity are as follows:
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (5)
1. the inclined emulation mode of infrared drawing of IR point source bait bullet, which is characterized in that method includes the following steps:
The standard pyranometer distribution curve of IR point source bait bullet is obtained by calculation；
Standard pyranometer distribution curve is segmented, the fitting function of each segmentation, including ignition section fitting function and combustion are obtained
Burn section fitting function；
It persists in asking according to drawing, the light-off time, combustion peak and firing duration of standard pyranometer distribution curve is carried out
It draws partially, obtains corresponding drawing bias, including light-off time draws bias, combustion peak that bias and firing duration is drawn to draw bias；
Using the initial value of standard pyranometer distribution curve and a certain range of random value of final value as drawing inclined initial value and end
Value according to the inclined initial value of the drawing, draws inclined final value, drawing bias and fitting function, and fitting obtains the inclined curve of drawing of time domain.
2. the inclined emulation mode of infrared drawing of IR point source bait bullet as described in claim 1, which is characterized in that fitting time domain is drawn
The method of inclined curve are as follows:
Draw inclined initial value and combustion peak that bias and light-off time is drawn to draw bias according to described, with the ignition section fitting function
To be fitted prototype, fitting obtains ignition section radiation intensity and draws inclined curve；
It draws inclined final value and combustion peak that bias and firing duration is drawn to draw bias according to described, letter is fitted with the burning zone
Number is fitting prototype, and fitting obtains burning zone radiation intensity and draws inclined curve；
It draws inclined curve and burning zone radiation intensity that inclined curve is drawn to stitch and fasten ignition section radiation intensity, obtains the time domain
Draw inclined curve.
3. the inclined emulation mode of infrared drawing of IR point source bait bullet as claimed in claim 2, which is characterized in that described in obtaining
After ignition section radiation intensity draws inclined curve and burning zone radiation intensity to draw inclined curve, noise is added in two curves.
4. the inclined emulation mode of infrared drawing of IR point source bait bullet as claimed in claim 2, which is characterized in that by the ignition
When section radiation intensity draws inclined curve and burning zone radiation intensity to draw inclined curve split, draws in combustion peak and adopted at left and right sides of bias
Sample, to be smoothed to the curve after split.
5. the inclined emulation mode of infrared drawing of IR point source bait bullet as described in claim 1, which is characterized in that IR point source lures
The calculating process of bait bullet standard pyranometer is as follows:
IR point source bait bullet burn when to the gross energy of external radiation be Q, then the radiation intensity I of IR point source bait bullet is by total spoke
Penetrate energy QrIt is obtained divided by 4 π:
For QrCalculating, obtained according to law of conservation of energy:
Qr=drQ
Wherein drIndicate static radiation coefficient；
The gross energy Q that IR point source bait bullet generates in combustion is calculated by following formula:
In formulaIndicate the quality combustion speed of IR point source bait bullet, HCFor unit quality IR point source bait ammunition agent combustion
The heat generated when burning；
To sum up standard pyranometer formula are as follows:
For specific wavelength λ1~λ2The radiation intensity that IR point source bait bullet burns in wave bandAccording to planck formula and
Stefan-Boltzmann law is available:
WhereinFor the radiation efficiency in the wave band:
Wherein c1For first radiation constant, c2For second radiation constant,Indicate the emissivity in selected emulation wave band, T is
Temperature when bait bullet burns, ε are emissivity, and σ is Stefan-Boltzmann constant；
Then bait bullet radiation intensity are as follows:
Wherein dwFor the velocity coeffficient of IR point source bait bullet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910389598.0A CN110119571B (en) | 2019-05-10 | 2019-05-10 | Infrared deviation simulation method for infrared point source bait bomb |
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| CN201910389598.0A CN110119571B (en) | 2019-05-10 | 2019-05-10 | Infrared deviation simulation method for infrared point source bait bomb |
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| CN110119571B CN110119571B (en) | 2022-11-15 |
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Citations (5)
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|---|---|---|---|---|
| EP1342047B1 (en) * | 2000-12-13 | 2006-02-22 | The Secretary of State for Defence | Infra-red emitting decoy flare |
| US20080006738A1 (en) * | 2005-10-28 | 2008-01-10 | The Boeing Company | Aircraft engine structure-mounted aim-point biasing infrared countermeasure apparatus and method |
| CN106570225A (en) * | 2016-10-19 | 2017-04-19 | 长春理工大学 | Analog simulation method for infrared jamming bomb |
| CN107977506A (en) * | 2017-11-28 | 2018-05-01 | 上海机电工程研究所 | Infrared flare Dynamic radiation characteristic computing method based on multiple physical field coupling |
| CN208333262U (en) * | 2018-06-27 | 2019-01-04 | 中国人民解放军陆军炮兵防空兵学院郑州校区 | A kind of infrared induction target simulation equipment |
-
2019
- 2019-05-10 CN CN201910389598.0A patent/CN110119571B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1342047B1 (en) * | 2000-12-13 | 2006-02-22 | The Secretary of State for Defence | Infra-red emitting decoy flare |
| US20080006738A1 (en) * | 2005-10-28 | 2008-01-10 | The Boeing Company | Aircraft engine structure-mounted aim-point biasing infrared countermeasure apparatus and method |
| CN106570225A (en) * | 2016-10-19 | 2017-04-19 | 长春理工大学 | Analog simulation method for infrared jamming bomb |
| CN107977506A (en) * | 2017-11-28 | 2018-05-01 | 上海机电工程研究所 | Infrared flare Dynamic radiation characteristic computing method based on multiple physical field coupling |
| CN208333262U (en) * | 2018-06-27 | 2019-01-04 | 中国人民解放军陆军炮兵防空兵学院郑州校区 | A kind of infrared induction target simulation equipment |
Non-Patent Citations (2)
| Title |
|---|
| YANGSONGQI等: "Infrared decoys recognition method based on dual-band information fusion", 《INFRARED PHYSICS & TECHNOLOGY》 * |
| 张小威等: "基于实测数据转换的红外场景修正方法", 《空天防御》 * |
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