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公开(公告)号：US10823611B2
公开(公告)日：2020-11-03
申请号：US16129461
申请日：2018-09-12
Inventor： Dimitre P. Dimitrov , Michael J. Choiniere
Abstract: A light sensing apparatus includes: an arrangement of light sensing pixels, one or more pixels each associated with a noise floor and able to detect a triggering level of incoming light above the noise floor from a corresponding portion of a scene; readout circuitry to process and reset the triggering pixels; and an automatic gain control (AGC) to raise the noise floor of one or more pixels. Sometimes, the light sensing apparatus is part of a seeker that includes control circuitry to dynamically control the AGC to raise the noise floor of one or more pixels by an adjustable amount that varies in relation to the distance between the seeker and an intended target. Sometimes, the control circuitry dynamically controls the AGC in response to a concurrent triggering of two or more triggering pixels. or in response to a gain schedule corresponding to guiding the seeker to the intended target.
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公开(公告)号：US20200342058A1
公开(公告)日：2020-10-29
申请号：US16397308
申请日：2019-04-29
Inventor： Ellen N. Hein , Nazior Rahman , Kalyanaraman Vaidyanathan
Abstract: A system for automatic prediction and generation of a Q-Code based on a text description provided in a NOTAM is provided. The present system may be utilized at a top level to generate a Q-Code from a text description or at a mid-level in the flight planning process to verify and/or confirm a human-generated Q-Code based on the text description in a NOTAM. Further, the present disclosure may allow for higher accuracy in the generation of Q-Codes thereby reducing the number of incorrect suboptimal and/or rejected flight plans produced by automatic flight planning systems.
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公开(公告)号：US10812985B2
公开(公告)日：2020-10-20
申请号：US16224253
申请日：2018-12-18
Inventor： Apurva N. Mody , Kenneth Carrigan , Jack Chuang , Alex Lackpour , Matthew J. Sherman , Alan M. Rosenwinkel
Abstract: A spectrum sharing system includes an advanced beacon (e.g. a low latency RF link) as part of an information sharing subsystem. The advanced beacon signal carries radar spectrum transmission schedule in an obfuscated way such as not to reveal the geolocation of the radar. The information sharing subsystem directs nodes, such as cell phones, to share spectrum based on spectrum sharing instructions contained in the advanced beacon. The spectrum sharing system permits out-of-band sharing of spectrum white space, as well as sharing of in-band spectrum gray space.
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公开(公告)号：US10795453B2
公开(公告)日：2020-10-06
申请号：US16047072
申请日：2018-07-27
Inventor： Michael J. Powers
Abstract: Systems and methods for testing or correcting optical pointing systems are disclosed. An optical pointing system may include an imaging sensor including a field-of-view (FOV) carried by the optical pointing system, at least one collecting device for collecting optical photons and directing the optical photons to the imaging sensor, at least one directing device for directing the at least one collecting device to different pointing vectors, and at least one non-transitory computer-readable storage medium carried by the optical pointing system having instructions encoded thereon that when executed by at least one processor operates to test the optical pointing system by, inter alia, determining a pointing error based, at least in part, on a macro image of a targeted object.
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公开(公告)号：US20200300590A1
公开(公告)日：2020-09-24
申请号：US16361322
申请日：2019-03-22
Inventor： Michael J. CHOINIERE , Jason T. STOCKWELL
Abstract: A tail kit assembly of a guided munition having a tail kit base connected to a trailing end of a projectile body. The tail kit base is rotatable relative to the projectile body. A trimmable rudder has forward and rearward ends. The forward end is pivotally coupled to the tail kit base, such that the trimmable rudder can, relative to the tail kit base, between retracted and extended orientations. An actuator is fixed between the tail kit base and the rearward end of the trimmable rudder. The actuator is electrically coupled to an onboard guidance system that controls actuation of the actuator to pivot the trimmable rudder between the retracted orientation and the extended orientation.
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Patent Agency Ranking
公开(公告)号：US20200292655A1
公开(公告)日：2020-09-17
申请号：US16352404
申请日：2019-03-13
Inventor： Richard Schiffmiller , Lawrence Sheldon
Abstract: Techniques are provided for geolocation of a radar emitting source. A methodology implementing the techniques according to an embodiment includes calculating time difference of arrival (TDOAs) of ground emitter radar pulses, within a dwell period, between two long baseline interferometer (LBI) antennas. The TDOA calculations are based on a precision estimate of the time of arrival of the radar pulses. The method further includes calculating an LBI phase wrap disambiguation factor based on (1) the TDOAs, (2) an average of frequencies of the radar pulses within the dwell period, and (3) an average of phase shifts of the radar pulses between the LBI antennas within the dwell period. The method further includes mapping a curve of points onto the surface of the earth based on an LBI cone angle calculation employing the LBI phase wrap disambiguation factor. The curve of points is associated with a geolocation of the ground emitter.
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公开(公告)号：US10778155B2
公开(公告)日：2020-09-15
申请号：US16211049
申请日：2018-12-05
Inventor： Randall M. White
Abstract: A dynamic differential amplifier includes: gain transistors to drive with differential input voltage levels; sample capacitors having first terminals to ramp from an initial voltage level to differential amplified voltage levels of the input voltage levels in response to the driven gain transistors; and adjustment circuits to adjust the amplified voltage levels in the direction of the initial voltage level by an offset voltage level. In some cases, second terminals of the sample capacitors are a common-mode node to maintain a common-mode voltage level midway between the ramping voltage levels of the first terminals. In some cases, the dynamic differential amplifier further includes a comparison circuit to compare the maintained common-mode voltage level to a threshold voltage level, wherein the first terminals of the sample capacitors stop ramping and the adjustment circuits adjust the amplified voltage levels in response to the compared common-mode voltage level reaching the threshold voltage level.
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公开(公告)号：US20200271773A1
公开(公告)日：2020-08-27
申请号：US16287374
申请日：2019-02-27
Inventor： Robert F. Saracino , Robert C. Bonino , Andrew E. Klappert , David C. Ringlen
Abstract: An identification friend or foe (IFF) transponder includes: an electronic receiver to receive encoded challenges from an IFF interrogator; a processing circuit including a decode circuit to decode the received challenges into encrypted challenges using a time of day (TOD) and/or a cryptographic key, a decrypt circuit to decrypt the encrypted challenges into challenges using the TOD and/or the key, a reply circuit to generate replies to the challenges, and an encode circuit to encode the generated replies using the TOD and/or the key; an electronic transmitter to transmit the encoded replies to the IFF interrogator; and an alert circuit to detect the encrypted challenges from the received challenges without using the TOD or the key, use the detected challenges to determine if the TOD is incorrect and/or the key is wrong, and issue an alert in response to determining the TOD is incorrect and/or the key is wrong.
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139.发明申请公开(公告)号：US20200259499A1
公开(公告)日：2020-08-13
申请号：US16273318
申请日：2019-02-12
Inventor： Randall M. White
Abstract: Circuit techniques are disclosed for improving the SFDR of a DAC. In an embodiment, a DAC includes a resistor ladder network operably coupled to input logic circuitry and an output. The input logic circuitry receives a multi-bit input signal and effectively creates a plurality of processed input signals therefrom. The resistor ladder network is configured to receive the plurality of processed input signals and includes a corresponding plurality of current paths. Each current path includes: a current switch operably controlled by one of the processed input signals; a first resistor in series with the current switch; a second resistor in series with the first resistor; and a feedforward capacitor in parallel with the second resistor. The output is operably coupled to each of the plurality of current paths and is configured to output an analog output signal that corresponds to the multi-bit input signal.
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公开(公告)号：US20200256982A1
公开(公告)日：2020-08-13
申请号：US16274419
申请日：2019-02-13
Inventor： Matthew P. Slaven , Richard E. Clymer , Gregory S. Laste
Abstract: A direction finding system and method to utilize synthetic apertures within a single short pulse transmission to extrapolate additional data relating to the signal to thereby increase the accuracy of the direction finding results given by a single short pulse is provided. The direction finding system may further exploit the movement of a platform to create the synthetic apertures within the signal data.
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