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公开(公告)号:US10127448B2
公开(公告)日:2018-11-13
申请号:US14829171
申请日:2015-08-18
Inventor: Riad Hammoud
Abstract: A method for dismount detection in low-resolution UAV imagery, comprising providing an input image, processing a greyscale distribution of the input image, determining a rough classification in the input image based on the grayscale distribution, determining the optimal parameters based on the rough classification, estimating one or more potential dismount locations, applying an area filter to the one or more potential dismount locations, removing undesired locations from the one or more potential dismount locations, applying one or more secondary filters to the resulting one or more potential dismount locations, assigning a probability to the one or more potential dismount locations, and assessing desirability of the one or more potential dismount locations.
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公开(公告)号:US20180317247A1
公开(公告)日:2018-11-01
申请号:US15582871
申请日:2017-05-01
Inventor: John H Chongoushian
CPC classification number: H04L63/0428 , H04L5/0055 , H04L12/64 , H04L43/087 , H04L47/6275 , H04W74/02
Abstract: A method is disclosed for minimizing latency for high priority messages without sacrificing subnet bandwidth in a wireless, multiple access network such as Link 16. Nodes are able to simultaneously receive messages on at least two subnets, one of which is designated as a low latency (“LL”) subnet that transmits messages immediately on a contention access basis. A message acknowledgement protocol can be implemented and high priority messages that fail due to collisions or other reasons can be retransmitted. Jitter can be used to detect collisions. Embodiments include a plurality of “standard” and/or LL subnets designated for messages of varied urgency. High priority messages can reserve an acknowledgement timeslot for use only by the message recipient. Link 16 embodiments implement CMN-4, whereby the LL subnet is one of four subnets monitored by each node. Link 16 latencies in the LL network can be limited to less than 40 msec.
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公开(公告)号:US20180299535A1
公开(公告)日:2018-10-18
申请号:US15490554
申请日:2017-04-18
Inventor: Jeffrey L. Jew , Paul R. Moffitt , Leonard A. Pomeranz , Hermanus S. Pretorius
CPC classification number: G01S7/4865 , G01S7/4863 , G01S7/487 , G01S17/10
Abstract: An active receiver having a digital-pixel focal plane array (DFPA) ranges a target when observing return pulses from a pulsed laser beam synced with the receiver. The DFPA establishes a time when the pulsed laser beam contacts a target and the range can then be established because the speed at which the laser beam travels is known. Various basis functions may be implemented with the DFPA data to establish when the laser beam contacts the target. Some exemplary basis functions are binary basis functions, and other exemplary basis functions are Fourier basis functions.
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公开(公告)号:US10104756B1
公开(公告)日:2018-10-16
申请号:US15869301
申请日:2018-01-12
Inventor: Chia-Lie Chang , Peter A. Budni
Abstract: The system and method for creating plasma flares in air by using an ultra-short pulse laser (USPL) that generates plasma filaments with a short lifetime (in nanoseconds), and by heating these plasma filaments with intense microwave (RF) radiation to induce robust air breakdown, resulting in long lifetime (up to milliseconds) plasma flares in the atmosphere.
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公开(公告)号:US10085120B1
公开(公告)日:2018-09-25
申请号:US15813373
申请日:2017-11-15
Inventor: Matthew C. Bromberg
CPC classification number: H04W4/023 , G01S5/0215 , G01S5/0278 , H04B17/12 , H04B17/21 , H04B17/27 , H04W84/005
Abstract: The system and method of copy aided geolocation in a cochannel environment. The plurality of emitter signals are detected using a multichannel antenna array, separated into subbands based on frequency ranges using a channelizer, and are further processed using copy weights, property restoral algorithms, and maximum likelihood calculations. The multichannel antenna array may be mounted to a mobile platform and the calculations may assume that the signal of interest is non-Gaussian, but the remainder of emitter signals is combined into another signal that is assumed to be Gaussian. The method and system provides geolocation results that adhere to the Cramer-Rao bound.
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公开(公告)号:US10079986B1
公开(公告)日:2018-09-18
申请号:US15694307
申请日:2017-09-01
Inventor: Allen W Hairston
CPC classification number: H04N5/359 , H04N5/3559 , H04N5/37455 , H04N5/378
Abstract: A high density, high speed ROIC uses in-pixel integration capacitors and comparators to convert each pixel charge to a train of pulse spikes which increment a capacitor to successive, discrete charge values that represent a digital, non-binary count value of an in-pixel multi-value digital counter (MVDC). The MVDC can include a plurality of stages whereby comparators limit the maximum count of each stage and increment subsequent stages. The maximum count can be a power of two for subsequent direct ADC conversion to binary. The count values and the residual integration capacitor charge can be read out by ramping the comparator reference inputs and measuring the comparator output timings, effectively forming partially in-pixel single-slope ADC's. The comparators can include temporary internal positive feedback to maintain consistency of the spike pulses to better than 10%.
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公开(公告)号:US20180202769A1
公开(公告)日:2018-07-19
申请号:US15407406
申请日:2017-01-17
Inventor: EDWARD M. KOLVEK , MICHAEL J. GROBECKER
CPC classification number: F41G11/003 , F41C27/00
Abstract: A mounting mechanism is disclosed. The mounting mechanism includes a base, a clamp and a lever. The base includes a lever keeper and a first rail-engaging surface. The clamp includes a second rail-engaging surface. The lever, which includes a lever tab, is connected to the clamp at a pivot to allow an operator to selectively place the clamp in an engaged position or a disengaged position. The lever is configured to move the clamp to the engaged position to allow a rail projection to be secured in a mounting cavity located between the first rail-engaging surface of the base and the second rail-engaging surface of the clamp. When in the engaged position, the lever tab located on the lever is configured to be engaged with the lever keeper located on the base in order to prevent the lever from swinging away from the clamp.
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公开(公告)号:US20180184021A1
公开(公告)日:2018-06-28
申请号:US15390206
申请日:2016-12-23
Inventor: R Daniel McGrath
IPC: H04N5/357 , H01L27/146 , H04N5/374 , H04N5/378
CPC classification number: H04N5/3575 , H01L27/14609 , H01L27/14612 , H01L27/14643 , H04N5/374 , H04N5/37452 , H04N5/378
Abstract: An extended range Compatible Metal Oxide Semiconductor Image Sensor and method for operating it is provided, the sensor comprising: a first conversion node; a first switch connected to said first conversion node; a second switch disposed in series with said first switch; and a capacitive element disposed between said first and said second switches.
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公开(公告)号:US20180166848A1
公开(公告)日:2018-06-14
申请号:US15374153
申请日:2016-12-09
Inventor: Katherine J. SNELL , John C. McCARTHY
CPC classification number: H01S3/1083 , G02F1/35 , H01S3/0092 , H01S3/08054 , H01S3/083 , H01S3/1095 , H01S3/1675 , H01S3/2316
Abstract: A hybrid resonator and amplifier combination for generating a high energy output signal. The combination comprises a beam splitter for splitting a pump laser beam into first and second portions. The second portion beam being conveyed to a resonator which operates in a single transverse mode to generating a signal wavelength beam. An output coupler of the resonator allows a first portion of the signal wavelength beam to pass therethrough while retaining a second portion of the signal wavelength beam within the resonator. A system dichroic mirror receives and directs both the first portion and the signal wavelength beam toward an amplifier. The amplifier receives both the first portion and the signal wavelength beam. The first portion, upon passing through the amplifier, creates gain which is used by the amplifier to amplify the signal wavelength beam generate the high energy output signal.
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公开(公告)号:US20180164507A1
公开(公告)日:2018-06-14
申请号:US15378602
申请日:2016-12-14
Inventor: York E. Young
CPC classification number: G02B6/2856 , G02B6/04 , G02B6/14 , G02B6/3813 , G02B6/3822 , G02B6/40 , G02B6/4296
Abstract: A light system may include a fused mid-IR tapered combiner to optically connect a bundle of mid-IR fiber bundles with a multimode fiber. The fused mid-IR fiber tapered combiner arranges a bundle of fibers in a geometric arrangement to reduce the diameter of a plurality of mid-IR fibers to match or equal the diameter of a single multimode mid-IR fiber. The mid-IR fibers carry light produced and emitted from semiconductor light sources.
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