TECHNIQUES FOR NAVIGATING UAVs USING GROUND-BASED TRANSMITTERS

    公开(公告)号:US20170199269A1

    公开(公告)日:2017-07-13

    申请号:US14966870

    申请日:2015-12-11

    CPC classification number: G01S19/48 G01S5/12

    Abstract: Systems, methods, apparatuses and computer-readable storage media for navigating an unmanned aerial vehicle (UAV) using signals of opportunity are disclosed. The UAV may include a receiver for detecting a plurality of signals at two or more receiver elements. The UAV may estimate an angle of arrival (AoA) for at least two signals of the plurality of signals, and may estimate a position of the receiver based, at least in part, on the AoA for each of the at least two signals. Known locations of the transmitters that are transmitting the at least two signals may be used in conjunction with the AoAs to determine the estimate of the position of the receiver. More than two signals may be used to localize the estimated position of the receiver.

    RADAR ENERGY ABSORBING DEFORMABLE LOW DRAG VORTEX GENERATOR

    公开(公告)号:US20170137115A1

    公开(公告)日:2017-05-18

    申请号:US15227921

    申请日:2016-08-03

    Abstract: A family of Radar energy Absorbing Deformable Low Drag Vortex Generators (RAD-LDVG) is described herein. This family of devices are fabricated in such a way that it can conform to aircraft surface features while reducing radar returns from structural details. Vortex generators (VGs) are typically used to reattach or smooth gross flowfields over aircraft surfaces. By doing so, an airfoil or wing can maintain attached flow at higher angles of attack and/or higher lift coefficients than one without the VGs. These devices are also used to reattach and/or smooth flows that encounter crossflow-induced instabilities and/or adverse pressure gradients on the upper surfaces of wings or near aircraft boattails. Other uses include reduction of buffet, vibration, flutter, cavity resonance or general bluff-body pressure drag reduction. Although conventional rigid VGs do generate vortical aerodynamic structures, two major problems are often experienced: i.) the inability to conform to curved surfaces, ii.) the generation of radar cross-section spikes produced by the VGs themselves.

    Methods and associated neural prosthetic devices for bridging brain areas to improve function
    99.
    发明授权
    Methods and associated neural prosthetic devices for bridging brain areas to improve function 有权
    用于桥接脑部区域以改善功能的方法和相关神经假体装置

    公开(公告)号:US09533150B2

    公开(公告)日:2017-01-03

    申请号:US14630375

    申请日:2015-02-24

    Abstract: Methods for bridging brain sites between which there is substantially no effective communication, and associated neural prosthetic devices, are provided. A neural spike in a first neural site in a subject is detected, and a stimulus to a second neural site in the subject is delivered within a defined period of time after the detection of the neural spike, wherein there is substantially no effective communication between the first and second neural sites. The method forms an artificial bridge between the two neural sites, and establishes lasting communication between the two sites. The present disclosure provides, among other things, a neural prosthetic device comprising an integrated circuit that comprises a recording front-end comprising a plurality of recording channels; a processor unit; and a stimulus delivering back-end comprising a plurality of stimulation channels.

    Abstract translation: 提供了桥接基本上没有有效通信的脑部位置和相关联的神经修复装置的方法。 检测受试者中第一神经位点中的神经尖峰,并且在检测到神经穗之后的确定的时间段内传递对受试者中的第二神经部位的刺激,其中基本上没有有效的通信 第一和第二神经位点。 该方法在两个神经位点之间形成人造桥梁,并建立了两个站点之间的持久通信。 本公开尤其提供了包括集成电路的神经假体装置,所述集成电路包括包括多个记录通道的记录前端; 处理器单元; 以及传送后端的刺激物,其包括多个刺激通道。

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