-
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.
-
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.
-
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.
-
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.
-
145.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.
-
Patent Agency Ranking
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.
-
公开(公告)号：US10720906B2
公开(公告)日：2020-07-21
申请号：US16029118
申请日：2018-07-06
Inventor： Douglas S. Jansen
Abstract: A voltage controlled oscillator (VCO) is disclosed to provide reduced phase noise at higher operating frequencies. A buffer-first VCO configured according to an embodiment includes multiple VCO core circuits configured to provide synchronously tuned oscillator signals. Each VCO core circuit is coupled to a summing node through a buffer circuit that generates uncorrelated phase noise such that the summing node provides a summation output of the oscillator signals with reduced phase noise. A multiplexer-less VCO configured according to an embodiment includes multiple buffer-first VCO circuits configured to provide oscillator signals covering a range of frequencies. Each buffer-first VCO circuit is controlled or selected by an enable signal. Buffer circuits are configured to select one of the buffer-first VCO circuits for coupling to a transmission line during a given time period based on the enable signal. The transmission line is terminated in a matched impedance at each end of the line.
-
公开(公告)号：US10720753B2
公开(公告)日：2020-07-21
申请号：US16101674
申请日：2018-08-13
Inventor： David B. Belley , Erik J. Spahr
Abstract: A mount connects a light emitting device, such as a laser diode assembly, to an optical bench. The mount may include a thermoelectrical module coupled to a sub-element of a heat exchanger extending through an opening formed in the optical bench. The thermoelectrical module acts as a heat sink to draw heat outwardly from the laser diode and cool the same. The heat sink enables the laser diode to transmit heat thereto such that substantially all of the heat generated by the laser diode sinks to the heat exchanger. As such, the laser diode transfers virtually no heat to the optical bench so the optical bench is free of deflections or distortions resultant from the heat generated during generation of the laser beam.
-
公开(公告)号：US10704865B2
公开(公告)日：2020-07-07
申请号：US15669640
申请日：2017-08-04
Inventor： James H. Steenson, Jr. , Derek P. Janiak
Abstract: Techniques are provided for a laser designation verification device and a method of laser designation verification using the device. The laser designation verification device includes: a lens to sense a first reflection, the first reflection coming from an encoded first laser beam reflecting off a first target; an electronic processing element to decode the sensed first reflection into a first code; and a portable electronic annunciator to provide identification of the first target to an operator of the device based on the decoded first reflection. The method includes: sensing a first reflection using the lens, the first reflection coming from an encoded first laser beam reflecting off a first target; decoding the sensed first reflection into a first code using the processing element; and providing, by the annunciator to an operator of the device, identification of the first target based on the decoded first reflection.
-
公开(公告)号：US10701371B1
公开(公告)日：2020-06-30
申请号：US16169639
申请日：2018-10-24
Inventor： Zachary J. Boll , Michael N. Mercier
IPC: H04N19/17 , H04N19/176 , G06F3/0484
Abstract: A system for lossless compression of high frame rate imagery includes at least one non-transitory computer readable storage medium having instructions encoded thereon that, when executed by at least one processor, implement operations to compress high frame rate imagery in a lossless manner, the at least one non-transitory computer readable storage medium including: logic to encode frame deltas to decrease pixel dynamic range; logic to localize frame deltas; and logic to encode subframes with lookback history to further decrease pixel dynamic range for temporary obstructions.
-
-
-
-
-
-
-
-
-
Search Results
1508
records
(took 0.055 seconds)
