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9019509 Chip-scale star tracker  
A chip scale star tracker that captures plane-wave starlight propagating in free space with a wafer-thin angle-sensitive broadband filter-aperture, and directs the light into a waveguide structure...
8927915 Detection of rocket body through an active firing plume  
Apparatus and a method for intercepting a rocket body during boost phase. A sensor is arranged to detect thermal emission in a range that is characteristic of a firing rocket body. The image...
8772690 Multi-functional star tracker with precision focal plane position control for small cubesat-class satellites  
An optical system for use in an Earth-orbiting satellite includes a plurality of image sensors disposed on a focal plane having a reference axis orthogonal thereto, optics configured to focus...
8653427 Digital semi-active laser receiver tracking of multiple line-of-sight (LOS) objects  
A digital SAL receiver implements a multiobject tracking method to detect EM pulses transmitted by a known source at a pulse repetition interval (PRI) and returned off of a target object to...
8530817 Field of view limit detection enhancement for quadrant-array detector systems  
A method of making a device comprising one or more quadrant detectors (and such a detector) comprising fabricating a two-dimensional array of photodiodes and placing one or more photodiodes around...
8401307 Determining celestial coordinates for an image  
A plate solving methodology determines celestial coordinates of an image. Star locations are extracted from the image in terms of pixel coordinates. A group of four stars, referred to as a “test...
8399818 Laser devices and methods for signature alteration of a target for remote tracking thereof  
A method of tracking a target comprising causing alteration to the target using a laser, recording an electromagnetic signature of the target after the causing alteration step, and tracking the...
8362410 Source-independent beam director and control system for a high-energy electromagnetic radiation source  
A high-energy beam is precompensated by a process including receiving a high-energy beam from a source and energy from a target. The target energy includes wavefront aberrations related to...
8334490 Off-axis reflective transmit telescope for a directed infrared countermeasures (DIRCM) system  
An off-axis reflective transmit telescope for a DIRCM system is mounted on the gimbal along a transmit-axis offset laterally from the optical axis of the receive telescope but nominally aligned...
8242428 Method and system for lidar using spatial information from a light source in combination with nonspatial information influenced by the subject to derive an image  
A method and system for at least three dimensional imaging comprising a processor for processing information; at least one photon light source generating a beam of light; a modulator for...
8207484 Streak image sensor and method of operating  
A LIDAR system that includes a streak image sensor having multiple sensor elements for receiving optical return signals from portions of a spatial region within their respective instantaneous...
8169623 Optical apparatus and method for measuring the attitude of an object in outer space  
An optical apparatus and method for measuring the attitude of an object in outer space includes an optical system having an aperture to receive optical radiation and a focal plane to image the...
8164037 Co-boresighted dual-mode SAL/IR seeker including a SAL spreader  
In a co-boresighted SAL/IR seeker, the optical system and particularly the secondary lens and position of the SAL detector are configured to produce a well-corrected spot of laser energy at the...
8017894 Imaging system using a negative index of refraction lens  
Systems and methods for imaging a distant light source at an enhanced resolution is provided. An evanescent field generator an evanescent field generator that receives an incident electromagnetic...
7880870 Linear array sensors for target detection including hydrocarbon events such as gun, mortar, RPG missile and artillery firings  
Detection sensors utilizing linear arrays using one or more linear arrays of detectors sampled at a high rate. The invention is useful for target detection including hydrocarbon events such as...
7759621 Method and system of performing multiple observations using a space-based telescope comprising independently targetable sensor units  
Multiple observations using a reconfigurable space-based telescope are performed by independently targeting one or more sensor units, within a field of view, relative to a main body of the...
7745768 Absolute target system enhanced by combining a star sensor and a formation flight optical metrological sensor  
The present invention relates to an absolute target system intended to be incorporated in observation satellites. To establish an absolute target system provided with maximum accuracy, the present...
7722198 Reflective occulting mask and method for manufacturing the reflective occulting mask  
A optical instrument (e.g., coronagraph) is described herein that has a pick-off mirror with a surface having an array of reflective structures (reflective occulting mask) machined therein which...
7714261 System and method for protection of aircraft based on correlating suspected missile tracks to derive a confirm missile track  
A system and method for protection of aircraft against surface-to-air missiles deploys sensors to provide coverage around an airport The use of a fixed (or slow moving) set of sensors around the...
7586075 Method for analyzing output data of array subelements of an imaging segmented array  
A position of a feature in a scene is located by forming an image of the feature using a segmented array having a plurality of array subelements. Each of the array subelements has an output...
7581480 Distributed ground-based threat detection system  
A distributed ground sensor threat detection system, which is an automated missile warning system designed to provide reliable, timely and accurate missile location information of...
7521664 Laser direction detection  
Apparatus for determining a direction of low power radiation originating from at least one source, the radiation arriving essentially collimated, the apparatus including an opening, at least two...
7411167 Tracking a moving object from a camera on a moving platform  
A method to dynamically stabilize a target image formed on an image plane of an imaging device located in a moving vehicle. The method includes setting an origin in the image plane of the imaging...
7385759 Optical system with variable pointing and method implementing such a system  
An optical system including a telescope and a principal pointing device for selecting a direction of observation is disclosed. The system furthermore includes at least one secondary pointing...
7378629 Detection device comprising a parabolic mirror and use of said device in an overflight machine  
The invention relates to a detection device, comprising a parabolic mirror (1) and several radiation detectors (2-5). The detectors are placed in the focal plane (O, X′-X, Y′-Y) of the mirror with...
7339731 Self-aligning telescope  
Embodiments of the present disclosure include self-aligning telescope control systems and self-alignment methods. In an embodiment, a telescope control system orients a telescope with respect to...
7312429 Method and apparatus of using optical distortion in a directed countermeasure system to provide a variable field of view  
A single, hard-mounted set of optics is utilized to replace a two field-of-view system for directed countermeasures. It includes within one continuous but distorted field of view the capability to...
7276681 On-board light source based gain correction for semi-active laser seekers  
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...
7265331 Optical sensing apparatus and method for determining highest intensity of light in an array  
A plurality of optical sensing elements in an array where each element has a unique element address identifying the element location. Each element senses light and produces an element address...
7230221 Portable air defense ground based launch detection system  
A ground based launch detection system consisting of a sensor grid of electro-optical sensors for detecting the launch of a threat missile which targets commercial aircraft in proximity to a...
7227114 Method of estimating the attitude of a space device with improved precision  
A method of determining the attitude of a spacecraft is provided. The method may include sensing the projections of a plurality of stars on a sensor, converting the projections into sensor-star...
7214916 Optical arrangement for a homing head with movable optical elements  
An optical arrangement (2) for a homing head (16), for the purpose of imaging an object scene onto a detector unit (4), including a control unit (24), a first optical unit (10) having two at least...
7151245 Systems and methods for compensating for dim targets in an optical tracking system  
A system and method are provided for controlling an optical imaging system capable of providing an image of a target. The system includes a reflector, an optical amplifier and a tracking device....
7138646 Light receiving device with controllable sensitivity and spatial information detecting apparatus with charge discarding device using the same  
A spatial information detecting apparatus using an intensity-modulated light has a photoelectric converter for receiving a light provided from a space, into which a light intensity-modulated by a...
6987256 Polarized semi-active laser last pulse logic seeker using a staring focal plane array  
An improvement in a semi-active laser last pulse logic missile seeker is disclosed and claimed. In one embodiment, the improvement includes a first polarizer disposed in the detection field of...
6872960 Robust infrared countermeasure system and method  
A system and method for focusing electromagnetic energy on a moving target. Generally, the inventive system sends a pilot beam to a target and analyzes a return wavefront to ascertain data with...
6795174 Tracking systems  
A system for tracking a projectile utilizing a laser beam modulated by an acousto-optic cell. Transponders distributed on hemispheres around the rear of the projectile detect the scanned beam and...
6741341 Reentry vehicle interceptor with IR and variable FOV laser radar  
A dual mode seeker for intercepting a reentry vehicle or other target is disclosed. In one embodiment, the seeker is configured with an onboard 3D ladar system coordinated with an onboard IR...
6738012 Protecting commercial airliners from man portable missiles  
A commercial airliner (10) carries a sensor that detects a characteristic (21) associated with a man portable missile (20). Raw sensor data is transmitted via a wireless data-link (41) to ground...
6723975 Scanner for airborne laser system  
A multi-axis laser scanner and receiver capable of providing laser scanning in multiple fields of view using a microscanner and a fold mirror with a patterned aperture. The fold mirror has a...
6700108 Means for protecting optical focal plane sensor arrays against excessive irradiation  
An imaging or viewing system, which automatically compensates for bright spots, which tend to overload or saturate imaging system. The system can be used with imaging type tracking systems,...
6674520 Closed-loop infrared countermeasure system using a high frame rate infrared receiver with nulling sequence  
A missile tracking and deflection system for protecting a platform includes a missile warning system for detecting the presence of a missile and generating a warning signal. A countermeasure...
6556351 System and method for attitude determination based on optical imaging  
A method and apparatus is provide for receiving a first set of optical data from a first field of view and receiving a second set of optical data from a second field of view. A portion of the...
6410897 Method and apparatus for aircraft protection against missile threats  
A two-color infrared warning device, having both wide-angle and narrow-angle search capabilities, and a directional countermeasure device are mounted on a gimbal pointing in the same direction....
6369885 Closed-loop infrared countermeasure system using high frame rate infrared receiver  
A missile tracking and deflection system for protecting a platform includes a missile warning system for detecting the presence of a missile and generating a warning signal. A countermeasure...
6362464 System for stellar inertial attitude determination  
An apparatus for determining stellar inertial attitude based upon a plurality of stars includes a star tracker and a controller. The star tracker is used to sense the positions of stars and...
6310730 Optical system with asymmetric optical corrector  
An optical system includes a curved window, an asymmetric, scoop-shaped optical corrector adjacent to a curved inner surface of the window, an optical train positioned such that the optical...
6265704 Tracking means for distant ballistic missile targets  
A laser tracking system steers a beam of laser energy which is dithered in two directions to scan the surface of a moving object. A laser energy detector detects laser energy reflected from the...
6259111 System for tracking movement of an object  
The present invention is generally directed to a system for taking displacement measurements of an object. The invention is realized by various embodiments. In one embodiment, the invention...
6246056 Earth sensor  
An apparatus for determining the attitude of an orbiting spacecraft includes an optical system for generating an image on a substrate of a body around which the spacecraft is orbiting, an infrared...

Matches 1 - 50 out of 234 1 2 3 4 5 >