| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | System and method of moving target based calibration of non-uniformity compensation for optical imagers | US11778391 | 2007-07-16 | US07899271B1 | 2011-03-01 | Darin S. Williams |
| A system and method for moving target based non-uniformity calibration for optical images. The described approach allows for the use of the same test chamber to perform non-uniformity calibration and moving target tests. The current approach works by scanning a test scene having a target and a background at different intensity levels in an overlapping pattern across the imager FOV and cross-referencing multiple measurements of each pixel of a test scene as viewed by different pixels in the imager; each fully-compensated image pixel sees multiple different scene pixels and each scene pixel is seen by multiple imager pixels. For each fully-compensated imager pixel, an Nth order correlation is performed on the measured and estimate pixel response data to calculate the NUC terms. This approach is based on the simple yet novel premise that every fully-compensated pixel in the array that looks at the same thing should see the same thing. | ||||||
| 82 | Self-calibrated, remote imaging and data processing system | US12798899 | 2010-04-13 | US20100235095A1 | 2010-09-16 | Chester L. Smitherman |
| An imaging sensor system comprising: a rigid mount plate affixed to a vehicle; a first rigid mount unit affixed to the mount plate and having at least two imaging sensors disposed within the first mount unit, wherein a first imaging and a second imaging sensor each has a focal axis passing through an aperture in the first mount unit and the mount plate, wherein the first and second imaging sensor each generates a first array of pixels, wherein each array of pixels is at least two dimensional, wherein the first and second imaging sensors are offset to have a first image overlap area in the target area, wherein the first sensors image data bisects the second sensors image data in the first image overlap area. | ||||||
| 83 | METHOD OF BORESIGHT CORRELATION OF IMAGER VIDEO TO REFERENCE VIDEO | US12259052 | 2008-10-27 | US20090046902A1 | 2009-02-19 | DARIN S. WILLIAMS; Edward N. Kitchen |
| The present invention provides for simple and streamlined boresight correlation of FLIR-to-missile video. Boresight correlation is performed with un-NUCed missile video, which allows boresight correlation and NUC to be performed simultaneously thereby reducing the time required to acquire a target and fire the missile. The current approach uses the motion of the missile seeker for NUCing to produce spatial gradient filtering in the missile image by differencing images as the seeker moves. This compensates DC non-uniformities in the image. A FLIR image is processed with a matching displace and subtract spatial filter constructed based on the tracked scene motion. The FLIR image is resampled to match the missile image resolution, and the two images are preprocessed and correlated using conventional methods. Improved NUC is provided by cross-referencing multiple measurements of each area of the scene as viewed by different pixels in the imager. This approach is based on the simple yet novel premise that every pixel in the array that looks at the same thing should see the same thing. As a result, the NUC terms adapt to non-uniformities in the imager and not the scene. | ||||||
| 84 | Doped fiber scene projection system and method | US11296714 | 2005-12-02 | US07403326B2 | 2008-07-22 | Brandon Shaw; Jasbinder S. Sanghera; Ishwar D. Aggarwal; Peter A. Thielen |
| This invention pertains to a scene projection system and a method for projecting a scene that can simulate light temperature of above 2000 K. The system comprises of a light source part for generating light at a lower wavelength; a means part for individually controlling dynamic range, contrast, brightness, temporal characteristics and temporal dynamics of the light; a rare earth doped fiber part that re-emits the output light at a higher wavelength; and a means part for conveying light between its parts. The method comprises steps of generating light at a lower wavelength; individually controlling temporal characteristics, temporal dynamics, brightness and contrast of the light; passing the light through a rare earth-doped fiber; and re-emitting the light at a higher wavelength. | ||||||
| 85 | FLIR-to-missile boresight correlation and non-uniformity compensation of the missile seeker | US10941203 | 2004-09-15 | US20080112594A1 | 2008-05-15 | Darin S, Williams; Edward N. Kitchen |
| The present invention provides for simple and streamlined boresight correlation of FLIR-to-missile video. Boresight correlation is performed with un-NUCed missile video, which allows boresight correlation and NUC to be performed simultaneously thereby reducing the time required to acquire a target and fire the missile. The current approach uses the motion of the missile seeker for NUCing to produce spatial gradient filtering in the missile image by differencing images as the seeker moves. This compensates DC non-uniformities in the image. A FLIR image is processed with a matching displace and subtract spatial filter constructed based on the tracked scene motion. The FLIR image is resampled to match the missile image resolution, and the two images are preprocessed and correlated using conventional methods. Improved NUC is provided by cross-referencing multiple measurements of each area of the scene as viewed by different pixels in the imager. This approach is based on the simple yet novel premise that every pixel in the array that looks at the same thing should see the same thing. As a result, the NUC terms adapt to non-uniformities in the imager and not the scene. | ||||||
| 86 | On-board light source based gain correction for semi-active laser seekers | US11139098 | 2005-05-26 | US20060266919A1 | 2006-11-30 | William Alexander; David Schorr |
| The invention provides a method and apparatus for correcting for gain changes in detectors in a guided vehicle. In one version of the invention, an on board light source is used to generate a reference set of detector gains, which are stored in computer memory. The on board light source is then pulsed at subsequent times and the signals generated by the detectors are compared to the reference set of detector gains to determine whether any gains have changed. | ||||||
| 87 | Automatic following device | US09726496 | 2000-12-01 | US06661450B2 | 2003-12-09 | Kunio Yata |
| Shootings for automatic following are previously registered in a memory of a pan head controller. When the automatic following is started, a CPU of the pan head controller chooses a shooting among the shootings registered in the memory according to a center position of a subject inputted from an image processing device so that the subject is in a frame of a camera, and transmits a control signal to a pan head for the shooting. | ||||||
| 88 | Self calibration of an array of imaging sensors | US10257449 | 2003-02-06 | US20030152248A1 | 2003-08-14 | Peter Edmunds Spark; Christopher John Gillham; Christopher Harris |
| A method of calibrating one or more image sensors in terms of position and/or attitude comprising capturing the image of a moving object such as an aircraft at one or more locations determining the 2-d position on the image (sensor). The 3-d position of the aircraft may be known or unknown. The moving object may be captured at a number of locations to improve accuracy. | ||||||
| 89 | Sun optical limitation illumination detector (SOLID) | US09584720 | 2000-06-01 | US06433330B1 | 2002-08-13 | Jacques Dubois |
| An imaging system for obtaining an image of a field-of-view where high levels of light from an extraneous source may be present at one area and low levels of light present at other areas in the field-of-view. The imaging system has a lens to focus an image of the field-of-view onto a surface of a photodetector and an optical limiter is located between the lens and the photodetector. The optical limiter limits transmission of the high levels of light at areas onto which those are focussed by the lens but remains transmissive to the low levels of light at other areas. The imaging system is particularly intended for use in laser warning receivers where sunlight may be focussed on the optical limiter and blocked at the particularly area on which it is focussed, the optical limiter remaining transmissive to laser beams, even if intense, at locations other than where the sunlight is focussed allowing laser beams to be detected by the photodetector. | ||||||
| 90 | Method and device for calibrating the deviation of a received beam from its desired position in a terminal | US09551756 | 2000-04-18 | US06396608B1 | 2002-05-28 | Jakob Neubert; Peter A. Adolph; Guy Colin Baister |
| Method for calibrating the deviation of a received beam in a terminal from its desired position. The received beam reaches a receiving sensor, and an acquisition beam an acquisition sensor of the terminal. The detection range of the acquisition sensor is greater than that of the receiving sensor. A portion of a transmitted beam emitted by the terminal to the partner terminal is guided as an incident beam on the reflecting surface, where it is reflected as an outgoing beam. A portion of the outgoing beam is respectively brought to the acquisition sensor and the receiving sensor. A respective measurement for the acquisition sensor and the receiving sensor is performed at least approximately isochronously; the measured results are compared for determining the deviation of the received beam from its desired position. Also a device for calibrating the deviation of a received beam in a terminal from its desired position. The terminal comprises at least one receiving channel with respectively a receiving sensor, a transmitting channel and an acquisition channel with an acquisition sensor. An optical splitting device is arranged in the transmitting channel, which splits the acquisition beam from the transmitting beam and the receiving beam. A reflecting surface reflects the portion of the receiving beam constituting an incident beam as an outgoing beam. Optical means bring the incident beam on the receiving sensor. A measuring and comparing device is used for performing a measurement for the receiving sensor and the acquisition sensor at least approximately isochronously and to compare the results of the measurements in order to determine from them the deviation of the received beam from its desired position. Use of a preferred further development of the device in a terminal equipped with a lead device, which communicates with a partner terminal which is displaceable in respect to it. The triplet beam being created in the course of this is used to calibrate and correct the setting of the lead device. | ||||||
| 91 | Automatic following device | US09726496 | 2000-12-01 | US20010002843A1 | 2001-06-07 | Kunio Yata |
| Shootings for automatic following are previously registered in a memory of a pan head controller. When the automatic following is started, a CPU of the pan head controller chooses a shooting among the shootings registered in the memory according to a center position of a subject inputted from an image processing device so that the subject is in a frame of a camera, and transmits a control signal to a pan head for the shooting. | ||||||
| 92 | Sensor device for a missile | US558832 | 1995-11-15 | US5669580A | 1997-09-23 | Werner Strauss |
| Described is a sensor device (10) for a missile (16) having a matrix detector (12) and an electronic evaluation circuit connected thereto. A ray source (20) is stationarily arranged on the missile (16). Provided between the ray source (20) and the matrix detector (12) which is stationarily provided on the missile (16) is a gyro optical device (22) which is cardanically mounted in the missile (16). The sensor device may be employed to determine the roll position and roll rate of a missile (16). | ||||||
| 93 | Sensor chamber | US608987 | 1990-10-31 | US5177362A | 1993-01-05 | William Reitman; Jeanette Kennedy |
| A sensor chamber is disclosed for testing the operation of detector modules designed to be placed in earth orbit. The sensor chamber includes a chamber housing and a vacuum pump for evacuating the sensor chamber housing to vacuum conditions representative of a space environment. An infrared detector module is disposable within the sensor chamber, the module being operative to receive an infrared frequency signal and generate an output signal in response thereto. A window is formed within the sensor chamber housing, adjacent the detector module, to facilitate communication of infrared frequency signals to the detector module. A detector servo mechanism is provided for regulating the orientation of the detector module within the sensor chamber housing. The detector servo being operative to effect movement of the detector module with respect to the infrared frequency signal. | ||||||
| 94 | Miniature infrared test target | US475574 | 1990-02-06 | US5041735A | 1991-08-20 | David B. Chang; Slava A. Pollack; Kenn S. Bates; I-Fu Shih |
| A miniature infrared test target that comprises a heated four-bar test target operated at a high temperature and a physically separated ambient field operated at ambient temperature. A beamsplitter is disposed relative to the test target and the field in a position to combine and transmit images thereof along a common axis. A lens is disposed along the common axis and forms a combined image of the test target and the field at its image plane. Separation of the test and field targets permits miniaturization of the test target while maintaining a temperature difference between the field and the bars that is proportional to the true temperature difference. The target overcomes the difficulty of maintaining an extremely high temperature gradient in the target. It provides a greater contrast range than that provided by conventional miniature targets. The miniature infrared test target is made with surfaces approximating a blackbody, thereby providing immunity from the Narcissus problem and the effects of complicated environmental changes. | ||||||
| 95 | Radiation position detection using time-indicative variable-length fiber array | US165639 | 1988-03-08 | US4825063A | 1989-04-25 | Thorsteinn Halldorsson; Ernst-August Seiffarth; Sigmund Manhart |
| A detector device for detecting and indicating the origin of laser radiation is disclosed. The detector has a plurality of discrete optics, with the discrete optics being arranged in azimuth planes. Each discrete optics monitors a preset solid angle with significant overlap between the angles. Each discrete optics has a first and second wave guide. The first wave guides are coupled to a first opto-electric transducer and the second wave guide is coupled to a second opto-electric transducer. The transducers are respectively coupled to a first and a second detector stage. All first wave guides leading to the first detector stage are of equal length while the second wave guides are of incrementally increasing length in the direction of increasing azimuth angle. The incrementally increasing length causes increasing travel time for light pulses over the wave guides. A transit time measuring device is coupled to the first and second detector stage and determines the beginning and end of the transit time measurement and, as a function of its, the solid angle of the incident laser radiation. Additionally, the opto-electric transducers of the first and second detector stages are coupled with a resonant circuit which acts as a filter stage. The resonant period of the resonant circuit is at least four times larger than the duration of the build-up time of the arriving laser pulse. The damped resonant circuits of the first and second detector stages are respectively coupled to passage-through-the-zero-axis detectors. The first time the incoming signal triggers one of the zero-axis detectors a starting signal is sent to the transit time measuring circuit and the next time one of the zero-axis detectors is triggered a stopping signal is sent to the measuring circuit. | ||||||
| 96 | Target for optically activated seekers and trackers | US353682 | 1982-03-01 | US4446363A | 1984-05-01 | Charles T. Lakin; Norman F. Willett |
| A target for optically activated seekers and trackers (TOAST) which provi for calibrated and variable target characteristics such as size, intensity, spatial position, color and interfering background. The TOAST has a first ilumination system providing a target light beam through an adjustable iris which controls image size. The target beam passes through a collimator lens which focuses the light at infinity. With the target beam focused at infinity, the motion of an elevation plate lengthens or shortens the distance from the collimator lens to a one motion mirror. The target beam is attenuated by a variable filter driven by a servo-motor, and a color selection process is provided by passing the beam through spectral filters. A focusing lens and attendant mirror lengthen or shorten the distance from the one motion mirror to the focusing lens and mirror, which is orthogonal with the one motion mirror, thus providing an X-Y movement of the target image formed by the focusing lens. The target image is formed in a plane and reflected by a beamsplitter mirror to a main objective lens which emanates the light focused at infinity. A background light beam with background imagery is provided to the beamsplitter mirror and mixed with the target image so as to simulate the target environment encountered by an operating optically activated seeker and tracker. | ||||||
| 97 | Internal reference for stellar tracker | US857157 | 1977-12-05 | US4187422A | 1980-02-05 | Bart J. Zoltan |
| A self-calibrating star tracker in which a light signal source located on the detector is reflected into the optics and redirected from the optics back onto the detector. In this manner, movement of the detector or optics from a known position can be sensed and calibration of the instrument can be conducted at any time (i.e., pre-flight or during the mission). The star tracker is contemplated to be used with an inertial guidance system and comprises a detector and optics. | ||||||
| 98 | Autocollimating assembly for the self-calibration of a stellar navigational system | US756517 | 1977-01-03 | US4123164A | 1978-10-31 | Ronald Tambor |
| An autocollimating assembly is provided for the tracking or position-sensing sub-system of a stellar navigational system, the sub-system being mounted on the stable platform of an inertial measuring unit. The autocollimating assembly, in conjunction with mirrors mounted on the internal surface of the spherical case of the inertial measuring unit permits accelerometer bias, scale factor and alignment measurements to be made, as well as gyro drift and alignment measurements, and sensor alignment for scale factor measurements, with the sub-system installed in the space vehicle. The autocollimating assembly of the invention includes a pattern of point light sources which generate a plurality of light beams which are collimated by the lens system of the sub-system, the beams being reflected back from one of the mirrors on the internal surface of the case of the inertial measuring unit. The reflected light is focused onto the surface of the vidicon or solid state stellar sensor in the sub-system. The angle .theta. of the mirror can be measured by the linear displacement of the light image on the sensor surface from its nominal position. | ||||||
| 99 | Bridge balancing circuit | US3702401D | 1968-11-22 | US3702401A | 1972-11-07 | PARKIN WILLIAM J |
| A bridge balancing circuit is provided, in which errors in a bridge due to relatively slow changes in its parameters or in environmental conditions are substantially eliminated. A receiving means is adapted for coupling to a bridge circuit having a signal source. The receiving means output is coupled through an integrator to an impedance which varies in accordance with the integrator output to thereby balance the bridge with respect to a reference voltage level.
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| 100 | Closed loop tracking system using signal beam | US15384002 | 2016-12-19 | US10101430B2 | 2018-10-16 | William Gross |
| The invention is a system and method for heliostat mirror control. Here, each heliostat mirror generates a low intensity “signal beam”, directed at an angle off from the heliostat mirror's high intensity and sensor blinding “main beam” of reflected solar energy. The low intensity signal beams may be created by reflecting a small portion of the incident solar light at an angle from the main beam, by reflected artificial light, or from lasers shinning onto mirrors from known locations. The signal beams are detected by optical sensors mounted way from the main heliostat receiver focus, and can be used in a closed loop control system to efficiently ensure that individual heliostat mirrors in a heliostat array accurately track sunlight and direct the sunlight to a central receiver. Because heliostat mirrors need not be taken “off sun” for positioning, the system allows heliostat arrays to be run at high efficiency. | ||||||
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