CN201680910U

CN201680910U - Antiaircraft weapon anti-stealth spatial modulation interference imaging spectrum target identification system

Info

Publication number: CN201680910U
Application number: CN201020144719XU
Authority: CN
Inventors: 谢纯
Original assignee: Chengdu Liehuzuo Science and Technology Co Ltd
Current assignee: Chengdu Liehuzuo Science and Technology Co Ltd
Priority date: 2010-03-30
Filing date: 2010-03-30
Publication date: 2010-12-22
Anticipated expiration: 2020-03-30

Abstract

The utility model discloses an antiaircraft weapon anti-stealth spatial modulation interference imaging spectrum target identification system which mainly detects the characteristics of optics and infrared rays of hard stealth of a stealth vehicle. The system is composed of two parts: 1. a spatial modulation interference imaging spectrograph is mainly composed of seven parts: a front telescope or photographic optical system camera, a dual angle reflector beam splitter, a Fourier lens FTL, a cylindrical lens CL, a planar array detector and an image processing system; 2. an omnibearing target automatic searching device and a spatial modulation interference imaging spectrograph are arranged in a hemispherical cylindrical cover with transparent window, two stepping motors drive a pair of gears respectively, so as to lead the spatial modulation interference imaging spectrograph to realize horizontal rotation with more than 360 degrees and pitching rotation with more than 90 degrees and realize automatic searching and tracking the targets; the mechanical structure is simple, the transmission precision and efficiency are high.

Description

System for recognizing anti-aircraft weapon anti-stealth spatially modulated interference imaging spectrometer target

One, technical field

The utility model relates to a kind of system for recognizing anti-aircraft weapon anti-stealth spatially modulated interference imaging spectrometer target.

Two, background technology

The general radar of stealthy aircraft (aircraft, guided missile) is difficult for surveying at present, such as: Northrop TacitBlue is another stealthy research aircraft, and primary study omnidirectional is stealthy, adopts the pot cover tee section, makes the radar wave energy wandering from the edge.The top is " predatory bird " stealthy research aircraft of Boeing.The polyhedron thinking of the scheme of Northrop and Lockheed is different, and the following flat pot cover profile of circle in the employing makes the energy of radar wave flow from the edge to disperse and reaches stealthy.This profile and Northrop one are heaven-made match to the all-wing aircraft of doting on, and the effort of Northrop has finally caused the B-2 bomber.

The AGM-137 stealth missile: AGM-137 type guided missile is a kind of air-launched stealthy tactical missile, range is 6000 kilometers, be equipped in successively on B-52, B-1B, three kinds of bombers of B-2 in 1996 to 2004, become the main conventional weapon that the USAF bomber is attacked High-Interest Object.MGM-137 type guided missile is ground-launched stealthy tactical missile, and range is 500 kilometers, is the general attack guided missiles of the U.S. army, can load " conventional or nuclear " warhead, heavily about 1000 kilograms, can be with subsonic flight, and performance is all better than other any stealth missiles.

The B-2 strategic bomber: the development work of B-2 stealth bomber starts from 1978, and definite procurement plan in 1989 comprises 1 prototype and 132 operationally-configured aircrafts (wherein 5 by the prototype repacking).Total expenses reaches 60,000,000,000 dollars (values of money in 1989), average every 4.5 hundred million.The initial conception of building the B-2A bomber starts from 1975.At that time, the code name that come out of steamer of " the advanced project office " under the U.S. Department of Defense was the project of " Ha Wei ", implemented to air force, had just derived XST (experiment, stealthy, fight) plan.At this in the works, the imagination that stealth technology is applied on the aircraft is proposed first.The Lockheed Co. of rich development military aircraft experience gets ahead of others, and has taken the lead in obtaining the development contract of the military, and has taken out two full-scale XST model machines very soon, proves that tentatively stealth technology is applied aboard and has feasibility.1977, " cold war " was still intoxicated.In order secret to charge into Soviet air space, seek and destroy the motor driven type intercontinental trajectory nuclear missile launcher of the Soviet Army and other grand strategy target in the depth, USAF proposes to make a kind of novel strategic bomber, require it can avoid the tight air search radar detection network of the other side, slip into enemy's depth, finish the work with 80% success ratio.For this reason, air force drawn up out " the sabre person of penetrating " plan, the application of stealth technology has been listed in concrete agenda.Because the model machine that Lockheed Co. submits to not long ago gets a good review, air force just will produce the contract of the stealthy fighter plane of F-117A and give this company.Along with the operation of stealthy fighter plane, U.S. Department of Defense and the very important person of Congress also begin to have accepted " stealth bomber " this notion, and in 1979 official approvals the application paper of this aircraft of development that proposes of air force.Next year, USAF has carried out open bidding with regard to development " advanced strategic penetrator (ASPA) ", and the scheme that Northrop Corporation proposes has obtained approval.Subsequently, USAF is formally named the research and development program element of this machine and is " advanced technology bomber (ATB) ", the initial title of-Here it is the stealthy strategic bomber of B-2.In initial several years of the eighties, big several times change has been experienced in the design of B-2.Such as, in 1984, just great change has been carried out in the design of aircraft main wing, because air force not only requires aircraft to charge into from the high-altitude, but also want the energy ultra-low altitude penetration, thereby brought the raising airplane ascensional force, strengthened physical construction intensity, further reduced a series of problems such as its radar reflection cross section, on April 20th, 1988, the USAF rollout Freehandhand-drawing profile coloured picture of one width of cloth B-2 aircraft, the world one of is shake, and aeronautical chart personage and numerous military aircraft fans express one's surprise deeply to its unique appearance invariably.On November 22 the same year, the B-2 prototype bomber that is numbered AV-1 " appears only afer a thousand entreaties " finally, becomes the monster that American public falls over each other to see for the moment, and the military publication of countries in the world also falls over each other it is reported.But after this, B-2 makes no public appearances once more and reaches the several years.During this, it has experienced the repeatedly secret that the military carries out takes a flight test and strict check, the have to all suggestions and the various harsh Change In Design that requires constantly to carry out that propose according to the air force aspect of manufacturer.After lasting whole 5 years, on Dec 17th, 1993, USAF has been released first B-2A type aircraft finally.

Three, summary of the invention

Anti-stealthy spatially modulated interference imaging spectrum target identification system is mainly surveyed stealthy aircraft and is not easy stealthy optics, infrared ray feature.It mainly is made up of double-corner reflection body beam splitting spatially modulated interference imaging spectrometer six parts: preposition looking in the distance or camera optical system, double-corner reflection body beam splitter, fourier lense, cylindrical mirror, planar array detector and signal processing system; Preposition optical system is the front focal plane of target imaging in FTL, and vertical herein paper is placed a slit, after the beam splitting of double-corner reflection body, slit same front focal plane on be divided into a pair of virtual image, they are parallel with former slit and Width is consistent; The interference strength of two empty slits at the back focal plane place is detected the device array received; Cylindrical mirror is collected horizontal direction with this interfering beam: delegation is parallel to paper along detector; The different rows reception that the interference strength that is positioned at the different visual field points of vertical paper direction on the slit distributes and is detected device, these interference strengths distribute and promptly obtain the spectral distribution of impact point through inverse Fourier transform, thereby obtain one dimension spectrum and one-dimensional space information; When slit push away inswept target as the time, can obtain another dimension space information.A/D quantizes, decoder module constitutes major and minor high speed image input channel; The DPS system, DPS system and frame memory and the interconnection of video bus expansion interface; Frame memory also with the intercommunication of image pretreatment module; Bus controller, image pretreatment module are communicated with address bus, data bus and control bus separately; Address bus, data bus and control bus also are connected with a look-up table and a pci bus interface of finishing nonlinear operation; Pci bus interface is communicated with a pci bus and a computing machine, and computing machine has the SR232 interface; Software systems are made up of hardware drive program, system platform and Flame Image Process Target Identification Software bag.

Flame Image Process Target Recognition part mainly provides some high speed image Processing Algorithm software packages, comprises that image pretreatment software bag, edge of image detect the identification software bag of software package, image space conversion software package, image characteristics extraction software package, image.Described Flame Image Process Target Identification Software bag comprise the image pre-service,

1) the image pre-service comprise in have gray correction, noise filtering and distortion correction;

2) feature extraction partly realizes rim detection connection, texture analysis, Region Segmentation Algorithm;

3) Target Recognition partly comprise in have moving object detection, module coupling, partial occlusion workpiece identification;

The basic skills of object identification is to set up object model, uses various matching algorithms to identify the object the most similar to object model then from real image.The basic step of object identification is: set up model bank, object features extraction, template matches, suppose the checking of structure etc., corresponding recognition system comprises four main modular: model bank, property detector, suppose to generate and hypothesis verification; Take the workpiece identification scheme based on model, this scheme stores the model of the work that will discern earlier, and by the matching technique of a kind of ' conjecture-checking ', quick identification goes out needed work in the visual field then.

The automatic ominibearing search of target device, the spatially modulated interference imaging spectrometer is contained in the semisphere cylinder cover with transparent window, drive a pair of gear respectively by two stepper motors and rotate, make the spatially modulated interference imaging spectrometer realize greater than 360 ° horizontally rotate and greater than 90 ° pitch rotation.The image of spatially modulated interference imaging spectrometer picked-up is delivered to graphics processing unit, give an order to the rotation of camera motion control module drive stepping motor by software identification, change the camera direction, realize searching automatically and tracking target, physical construction is simple, transmission accuracy and efficient height.

Four, description of drawings

Fig. 1 is a double-corner reflection body beam splitting spatially modulated interference imaging spectrometer structure principle chart.

Five, embodiment

Do further introduction below in conjunction with Fig. 1: in Fig. 1,1,2 are respectively the right angle length of side of two corner reflectors; 3 is the wrong position of two corner reflectors; 4 is preposition telescope or camera optical system; 5 is the crack; 6 is fourier lense; 7 is cylindrical mirror; 8 is planar array detector and signal processing system; 9 is that light beam is by the shearing displacement after cutting apart.It mainly is made up of double-corner reflection body beam splitting spatially modulated interference imaging spectrometer six parts: preposition looking in the distance or camera optical system, double-corner reflection body beam splitter, fourier lense, cylindrical mirror, planar array detector and signal processing system; Preposition optical system with target imaging in front focal plane, vertical herein paper is placed a slit, after the beam splitting of double-corner reflection body, slit same front focal plane on be divided into a pair of virtual image, they are parallel with former slit and Width is consistent; Two empty slits are detected the device array received at the interference strength at FTL back focal plane place; Cylindrical mirror is collected horizontal direction with this interfering beam: delegation is parallel to paper along detector; The different rows reception that the interference strength that is positioned at the different visual field points of vertical paper direction on the slit distributes and is detected device, these interference strengths distribute and promptly obtain the spectral distribution of impact point through inverse Fourier transform, thereby obtain one dimension spectrum and one-dimensional space information; When slit push away inswept target as the time, can obtain another dimension space information.Intelligent spherical camera with automatic ominibearing search of target, the CCD camera is contained in the semisphere cylinder cover with transparent window, drive a pair of gear respectively by two stepper motors and rotate, make camera realize greater than 360 ° horizontally rotate and greater than 90 ° pitch rotation.The image of CCD camera picked-up is delivered to graphics processing unit, gives an order by software identification and rotates to camera motion control module drive stepping motor, changes the camera direction, realizes searching automatically and tracking target.Its physical construction is simple, transmission accuracy and efficient height.

Claims

1. system for recognizing anti-aircraft weapon anti-stealth spatially modulated interference imaging spectrometer target, be made up of double-corner reflection body beam splitting spatially modulated interference imaging spectrometer, automatic ominibearing search of target device, it mainly is made up of seven parts to it is characterized in that double-corner reflection body beam splitting spatially modulated interference imaging spectrometer: preposition looking in the distance or camera optical system, double-corner reflection body beam splitter, fourier lense, cylindrical mirror, planar array detector, image processing system; Preposition optical system with target imaging in front focal plane, vertical herein paper is placed a slit, after the beam splitting of double-corner reflection body, slit same front focal plane on be divided into a pair of virtual image, they are parallel with former slit and Width is consistent; The interference strength of two empty slits at the back focal plane place is detected the device array received; Cylindrical mirror CL collects horizontal direction with this interfering beam: delegation is parallel to paper along detector; The different rows reception that the interference strength that is positioned at the different visual field points of vertical paper direction on the slit distributes and is detected device, these interference strengths distribute and promptly obtain the spectral distribution of impact point through inverse Fourier transform, thereby obtain one dimension spectrum and one-dimensional space information; When slit push away inswept target as the time, can obtain another dimension space information; Planar array detector is surveyed battle array for infrared focus plane low temperature; Image processing system is: A/D quantizes, decoder module constitutes major and minor high speed image input channel; Dsp system, dsp system and frame memory and the interconnection of video bus expansion interface; Frame memory also with the intercommunication of image pretreatment module; Bus controller, image pretreatment module are communicated with address bus, data bus and control bus separately; Address bus, data bus and control bus also are connected with a look-up table and a pci bus interface of finishing nonlinear operation; Pci bus interface is communicated with a pci bus and a computing machine, and computing machine has the SR232 interface; Software systems are made up of hardware drive program, system platform and image processing software bag.

2. a kind of system for recognizing anti-aircraft weapon anti-stealth spatially modulated interference imaging spectrometer target according to claim 1, it is characterized in that described automatic ominibearing search of target device is: the spatially modulated interference imaging spectrometer is contained in the semisphere cylinder cover with transparent window, drive a pair of gear respectively by two stepper motors and rotate, make the spatially modulated interference imaging spectrometer realize greater than 360 ° horizontally rotate and greater than 90 ° pitch rotation; The image of spatially modulated interference imaging spectrometer picked-up is delivered to graphics processing unit, gives an order by software identification and rotates to camera motion control module drive stepping motor, changes the camera direction, realizes searching automatically and tracking target.