| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Laser calibration of IR sensors using pulsed signals | US909304 | 1997-08-11 | US5933241A | 1999-08-03 | Richard A. Marsh |
| A calibration system in which calibration target illuminates the IR sensor with at least two distinct inputs spaced apart in time approximately equal to the time it takes the IR sensor to scan an image of the target across the IR sensor field of response. | ||||||
| 62 | Calibration method and apparatus for collecting the output of an array of detector cells | US906096 | 1992-06-29 | US5223841A | 1993-06-29 | Alton R. Ricker |
| A parallel to serial converter converts parallel detected signals output m a linear array of photodetector cells to an uncorrected serial signal. A comparator compares the uncorrected serial signal from the parallel to serial converter with a previous offset stored in a shift register. An offset difference output from the comparator is added to a previous offset output from the shift register to provide a new offset for input to the shift register. An operate adder finally provides a corrected serial signal by adding the uncorrected serial signal from the parallel to serial converter and the new offset output from the learn adder. | ||||||
| 63 | APPARATUS AND METHOD FOR PERFORMING GRID ADAPTION IN NUMERICAL SOLUTION OF RECURSIVE BAYESIAN ESTIMATORS | US15606764 | 2017-05-26 | US20180340965A1 | 2018-11-29 | Milos Sotak; Milos Vesely; Jindrich Dunik |
| A system is provided. The system comprises: a processing system comprising a memory coupled to a processor; wherein the processing system is configured to be coupled to at least one sensor; wherein the memory comprises a grid adaptation system, a system model, measurement data, and an estimation system; wherein the measurement data comprises data measured by the at least one sensor; wherein the estimation system is configured to provide probability density functions (PDFs) for a predictive estimate and a filtered estimate of a state in a form of a point-mass density; and wherein the grid adaption system is configured to adapt grid parameters of a predictive estimate and a filtered estimate. | ||||||
| 64 | SCHEME CAPABLE OF CALIBRATING VALUE OF SAMPLING PRECISION OF OPTICAL SENSOR FOR TRACKING | US15213411 | 2016-07-19 | US20180024221A1 | 2018-01-25 | Chiang Hee LIM |
| A method for calibrating a value of sampling precision of an optical sensor for tracking includes: reading a precision variance and a setting precision value from a memory device; measuring the sampling precision of the optical sensor under a normal mode to generate an actually measured precision value; calculating a normalized value that is proportional to the actually measured precision value according to the precision variance, the actually measured precision value, and the setting precision value; and, calibrating the actually measured precision value by using the normalized value. | ||||||
| 65 | SELF-CALIBRATED, REMOTE IMAGING AND DATA PROCESSING SYSTEM | US15200883 | 2016-07-01 | US20160313435A1 | 2016-10-27 | Chester L. Smitherman |
| An imaging sensor system, having a view of a target area comprising: a rigid mount unit having at least two imaging sensors disposed within the mount unit, wherein a first imaging and a second imaging sensor each has a focal axis passing through an aperture in the mount unit, wherein the first imaging sensor generates a first image area comprising a first data array of pixels and the second imaging sensor generates a second image area comprising a second data array of pixels, 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. | ||||||
| 66 | Non-adjustable pointer-tracker gimbal used for directed infrared countermeasures systems | US13506901 | 2012-05-23 | US09310191B1 | 2016-04-12 | Armando Corella; Lynne F. Buzdar; Ronald A. Gidseg |
| In a directed infrared countermeasure system, to assure parallelism between the line-of-sight to a target and the output beam, the input and output mirrors are fixedly attached to a uni-construction arm mounted to a rotatable azimuth platter to which internal mirrors are also fixedly attached. A system is provided for zeroing out alignment errors by developing an aim-point map for the gimbal that records initial alignment errors induced by manufacturing tolerances and uses the aim-point map error values to correct the output mirror orientation. The system also corrects for alignment errors induced by thermal gradients. | ||||||
| 67 | Tracking system calibration using object position and orientation | US12789358 | 2010-05-27 | US09058063B2 | 2015-06-16 | Richard Lee Marks; Eric Larsen |
| To calibrate a tracking system, a computing device receives positional data of a tracked object from an optical sensor as the object is pointed approximately toward the optical sensor. The computing device computes a first angle of the object with respect to an optical axis of the optical sensor using the received positional data. The computing device receives inertial data corresponding to the object, wherein a second angle of the object with respect to a plane normal to gravity can be computed from the inertial data. The computing device determines a pitch of the optical sensor using the first angle and the second angle. | ||||||
| 68 | Sensor rotation bias removal | US13313295 | 2011-12-07 | US09030352B2 | 2015-05-12 | Richard J. Kenefic |
| A method for determining rotation bias in a sensor using a cooperative target that includes receiving, via a processor, sensor data acquired in a field of view of a sensor at a plurality of points in time. The method also includes receiving, via the processor, position data for a cooperative target travelling along a path through the field of view of the sensor at the plurality of points in time. The method also includes determining, via the processor, a rotation bias in the sensor based on a maximum likelihood estimate performed over the path based on the sensor data and the cooperative target position data. | ||||||
| 69 | Movable pixelated filter array | US13599633 | 2012-08-30 | US08842216B2 | 2014-09-23 | Eric C. Fest; Michael P. Schaub; Page E. King |
| An optical imaging system and method including a movable pixelated filter array, a shutter mechanism to which the pixelated filter array is attached, and a controller configured to implement a data reduction algorithm. The shutter mechanism is configured to move the pixelated filter array into and out of the optical path, and the data reduction algorithm allows the controller to account for axial and/or lateral misalignment of the filter array relative to the imaging detector array or its conjugate. In certain examples, the controller is further configured to use the data reduction algorithms also to perform wavefront sensing, for example to estimate wavefront error. | ||||||
| 70 | Self-calibrated, remote imaging and data processing system | US12798899 | 2010-04-13 | US08483960B2 | 2013-07-09 | 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. | ||||||
| 71 | Sensor Rotation Bias Removal | US13313295 | 2011-12-07 | US20130147665A1 | 2013-06-13 | Richard J. Kenefic |
| A method for determining rotation bias in a sensor using a cooperative target that includes receiving, via a processor, sensor data acquired in a field of view of a sensor at a plurality of points in time. The method also includes receiving, via the processor, position data for a cooperative target travelling along a path through the field of view of the sensor at the plurality of points in time. The method also includes determining, via the processor, a rotation bias in the sensor based on a maximum likelihood estimate performed over the path based on the sensor data and the cooperative target position data. | ||||||
| 72 | Compact fixed-source array test station for calibration of a semi-active laser (SAL) seeker | US13479088 | 2012-05-23 | US08447550B1 | 2013-05-21 | Michael K. Burkland |
| A fixed-source array test station provides a compact cost-effective high-throughput test bed for testing optical sensors that require stimulus at fixed angular positions. An array of fixed collimated sources at different angular positions in the sensor's FOV are positioned on a surface of a focal sphere at the effective focal length of a spherical lens and aligned along respective radial lines to the center of the spherical lens so that each said divergent optical beam is collimated by the spherical lens to form a collimated optical beam that overlaps the entire entrance pupil of the optical seeker. The sources are activated in accordance with an activation profile in order to calibrate or otherwise test the sensor. | ||||||
| 73 | Apparatus with optical functionality and associated methods | US12954637 | 2010-11-25 | US08405030B2 | 2013-03-26 | Timothy T. Rueger; William Hong; David Andreas |
| In an exemplary embodiment, an apparatus includes a sensor integrated circuit (IC). The at least one integrated photodetector that is adapted to sense light, and an integrated analog-to-digital converter (ADC). The integrated analog-to-digital converter (ADC) is coupled to the at least one integrated photodetector, and is adapted to convert an output signal of one or more of the at least one integrated photodetector to one or more digital signals. The sensor integrated circuit (IC) further includes an integrated controller that is adapted to facilitate operation of the sensor integrated circuit (IC). | ||||||
| 74 | System and Method for Atmospheric Correction of Information | US13174864 | 2011-07-01 | US20130006534A1 | 2013-01-03 | Michael A. Kelly; Kwame Osei-Wusu; Edward E. Hume, JR.; Shadrian B. Strong |
| An atmospheric correction system (ACS) is proposed, which accounts for the errors resulting from the in-homogeneities in the operational atmosphere along the slant path by constructing atmospheric profiles from the data along the actual target to sensor slant-range path. The ACS generates a slant-range path based on the arbitrary geometry that models the sensor to target relationship. This path takes the atmosphere and obstructions between the two endpoints into account when determining the atmospheric profile. The ACS uses assimilation to incorporate weather data from multiple sources and constructs an atmospheric profile from the best available data. The ACS allows the user to take advantage of variable weather and information along the path that can lead to increased accuracy in the derived atmospheric compensation value. | ||||||
| 75 | Second-order delta-sigma analog-to-digital converter | US12956775 | 2010-11-30 | US08253613B2 | 2012-08-28 | Wayne T. Holcombe |
| In one embodiment, a second-order delta-sigma analog-to-digital converter (ADC) includes a second-order integrator adapted to second-order integrate a value at a first node, where the first node is coupled to an input of the ADC. The ADC also includes a comparator coupled to an output of the second-order integrator. The ADC further includes a digital-to-analog converter (DAC) coupled between an output of the comparator and the first node. The DAC is adapted to receive a digital output of the comparator and to generate a first charge or a second charge. The DAC includes a first charge pump adapted to produce the first charge and a second charge pump adapted to produce the second charge. The first and second charges are asymmetric. | ||||||
| 76 | Fixed-Source Array Test Station for Calibration of a Semi-Active Laser (SAL) Seeker | US12947234 | 2010-11-16 | US20120143551A1 | 2012-06-07 | Michael K. Burkland; Casey T. Streuber; Kristofer E. Tvedt |
| A fixed-source array test station provides a cost-effective high-throughput test bed for testing optical sensors that require stimulus at fixed angular positions. A SAL seeker requires stimulus at fixed angular position across its FOV to calibrate its spatial transfer function (STF). An array of fixed collimated sources at different angular positions is aligned so that their beams overlap the entrance pupil of the sensor under test. Each source may comprise an inexpensive light emitting diode (LED) or vertical cavity surface emitting laser (VCSEL) and collimator. To simplify alignment the sources may be positioned on and perpendicular to the surface of a sphere with the seeker's entrance pupil located at the center of the sphere. The sources are activated in accordance with an activation profile in order to calibrate or otherwise test the sensor. | ||||||
| 77 | SECOND-ORDER DELTA-SIGMA ANALOG-TO-DIGITAL CONVERTER | US12956775 | 2010-11-30 | US20110248875A1 | 2011-10-13 | Wayne T. Holcombe |
| Techniques are disclosed relating to analog-to-digital converters in integrated circuits. In one embodiment, a second-order delta-sigma analog-to-digital converter (ADC) is disclosed. The ADC includes a second-order integrator adapted to second-order integrate a value at a first node, where the first node is coupled to an input of the ADC. The ADC also includes a comparator coupled to an output of the second-order integrator. The ADC further includes a digital-to-analog converter (DAC) coupled between an output of the comparator and the first node. The DAC is adapted to receive a digital output of the comparator and to generate a first charge or a second charge. The DAC includes a first charge pump adapted to produce the first charge and a second charge pump adapted to produce the second charge. The first and second charges are asymmetric. | ||||||
| 78 | SYSTEMS AND METHODS FOR A DIGITAL-TO-CHARGE CONVERTER (DQC) | US12975819 | 2010-12-22 | US20110248649A1 | 2011-10-13 | Jefferson L. Gokingco; Stephen C. Gerber; Wayne T. Holcombe; Miroslav Svajda; Robert G. Farmer |
| Systems and methods for a digital-to-charge converter (“DQC”) are disclosed. A DQC may include a converting circuit configured to receive a first digital signal indicative of a voltage across a capacitor coupled to an output pin of the digital-to-charge converter and to determine a present charge of the capacitor based at least in part on the first digital signal. The DQC may also include an error determining circuit coupled to the converting circuit, wherein the error determining circuit is configured to receive a second digital signal indicative of a target charge via an input pin of the digital-to-charge converter and to determine a difference between the target charge and the present charge. The DQC may further include a correction circuit coupled to the error determining circuit and configured to control a programmable current source to produce an analog signal at the output pin in response to the determined difference. | ||||||
| 79 | APPARATUS WITH OPTICAL FUNCTIONALITY AND POWER MANAGEMENT AND ASSOCIATED METHODS | US12954639 | 2010-11-25 | US20110248172A1 | 2011-10-13 | Timothy T. Rueger; William Hong; David Andreas |
| In an exemplary embodiment, an apparatus includes a sensor integrated circuit (IC) that is adapted for ambient light sensing (ALS) and/or proximity detection. The sensor integrated circuit (IC) includes an integrated analog-to-digital converter (ADC) that is adapted to convert at least one signal related to ambient light sensing (ALS) and/or proximity detection to at least one digital signal, and an integrated light emitting diode (LED) driver that is adapted to drive at least one LED. The sensor IC also includes an integrated power management unit (PMU) that is adapted to reduce power dissipation of the sensor IC by running at a low duty cycle the integrated LED driver and the integrated ADC. | ||||||
| 80 | Heliostat with integrated image-based tracking controller | US12058110 | 2008-03-28 | US07906750B2 | 2011-03-15 | Kevin Hickerson; Dan Reznik |
| A system (100) for directing incident sun light to a receiver (150) based on an integral imager (116) is disclosed. The system includes an imager (116) mounted to a reflector (112); a tracking controller (226) coupled to the imager; and one or more actuators (114) connected to the reflector and tracking controller. The tracking controller (226) is configured to receive and process image data from the imager (116); determine angular positions of a radiation source and target relative to the mirror normal vector (N) based on the image data; and orient the reflector with the axis bisecting the angular positions of the sun and receiver (150). When the optical axis of the imager is precisely aligned with the vector normal to the reflector, the source and target will be detected as antipodal spots (320, 330) with respect to the center of the imager's field of view, which may be used to effectively track the sun or like object. | ||||||
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