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    Direction finding method
    2.
    发明申请
    Direction finding method 失效
    指导方法

    公开(公告)号：US20020190902A1

    公开(公告)日：2002-12-19

    申请号：US09963166

    申请日：2001-09-25

    Applicant: DSO National Laboratories

    Inventor： See Chong Meng Samson ,  Gim Pew Quek

    IPC: G01S003/52 ,  G01S005/02

    CPC classification number: G01S3/74 ,  G01S3/54

    Abstract: A method of determining the angle of arrival of a signal, the method comprising the steps of: providing a plurality of antennae; sampling, in turn, the output from each of the antennae, to obtain a set of samples, each of the samples relating to different points in time; performing a Fourier transform on the set of samples, thereby producing a sequence of spectral lines; identifying a signal impinging on the antennae from the configuration of the spectral lines; and calculating, from phase and amplitude data gathered from at least a subset of the spectral lines, the direction of arrival of the signal at the antennae. The invention allows high resolution estimation of the directions of arrival of multiple signals with a single channel receiver employing a plurality of antennae which may be spatially separated or provided in substantially the same location as one another. The antenna sampling rate need only be 2N times the bandwidth of the impinging signals (N being the number of antennae), and direction finders operating in accordance with the invention may be inexpensive, compact and high-performance.

    Abstract translation: 一种确定信号到达角度的方法，所述方法包括以下步骤：提供多个天线; 对每个天线的输出进行采样，以获得一组样本，每个样本与不同时间点相关; 对该组样本进行傅立叶变换，由此产生一系列谱线; 从所述谱线的配置识别入射在所述天线上的信号; 并且从从频谱线的至少一个子集收集的相位和幅度数据计算信号在天线处的到达方向。 本发明允许使用单个信道接收机对多个信号的到达方向进行高分辨率估计，所述单个信道接收机采用可以在空间上分离或设置在彼此基本相同的位置的多个天线。 天线采样率只需要入射信号的带宽的2N倍（N是天线的数量），并且根据本发明操作的测向仪可能是便宜的，紧凑的和高性能的。

    Unmanned Aerial Vehicle and a Method for Landing the Same
    3.
    发明申请
    Unmanned Aerial Vehicle and a Method for Landing the Same 审中-公开
    无人机及其着陆方法

    公开(公告)号：US20160179097A1

    公开(公告)日：2016-06-23

    申请号：US14901661

    申请日：2013-06-24

    Applicant: SINGAPORE TECHNOLOGIES AEROSPACE LTD ,  DSO NATIONAL LABORATORIES

    Inventor： Chee Nam Chua ,  Junwei Choon ,  Kok Yong Lim

    IPC: G05D1/06 ,  G05D1/00 ,  B64C25/32 ,  B64C39/02

    CPC classification number: G05D1/0676 ,  B64C13/18 ,  B64C25/32 ,  B64C39/024 ,  B64C2201/146 ,  B64C2201/187 ,  G05D1/0011 ,  G05D1/0808

    Abstract: Various embodiments provide a method for landing an unmanned aerial vehicle (UAV) in the presence of a wind. The method comprises: performing a first flare-maneuver whilst the UAV is flying. The flare-maneuver causes a front portion of the UAV to rise with respect to a rear portion of the UAV. The method also comprises steering the UAV along a path heading into a direction of the wind. The method further comprises performing a second flare-maneuver before the UAV impacts a landing surface to land. Various embodiments provide a corresponding UAV.

    Abstract translation: 各种实施例提供了一种在存在风的情况下着陆无人驾驶飞行器（UAV）的方法。 该方法包括：在无人机飞行时执行第一次火炬弹。 火炬机动使无人机的前部相对于无人机的后部上升。 该方法还包括沿着朝向风向的路径转向无人机。 该方法还包括在UAV撞击着陆面到达之前进行第二次火炬弹。 各种实施例提供相应的无人机。

    Ladder-like silicone polymers
    5.
    发明申请
    Ladder-like silicone polymers 失效
    梯状硅胶聚合物

    公开(公告)号：US20030212228A1

    公开(公告)日：2003-11-13

    申请号：US10268540

    申请日：2002-10-09

    Applicant: DSO National Laboratories

    Inventor： Jie Dai ,  Chaoran Deng

    IPC: C08G077/00

    CPC classification number: C08G77/06 ,  C08G77/04 ,  C08G77/38

    Abstract: There is disclosed a three stage method for the preparation of ladder-like silicone polymers. The first stage comprises hydrolysis and polymerization of alkyltrialkoxylsilane-like monomers to give relatively low molecular weight prepolymers. The second stage comprises dehydrated condensation polymerization of the prepolymers to give high molecular weight polymers. The third stage comprises partial blocking of a proportion of the pendant SinullOH (silanol) groups with a pre-determined sub-stoichiometric amount of a blocking agent. Also disclosed are the prepolymers, polymers and partially blocked polymers so produced.

    Abstract translation: 公开了制备梯状硅氧烷聚合物的三阶段方法。 第一阶段包括烷基三烷氧基硅烷类单体的水解和聚合，得到相对低分子量的预聚物。 第二阶段包括预聚物的脱水缩聚得到高分子量聚合物。 第三阶段包括用预定的亚化学计算量的封闭剂部分封闭一部分Si-OH（硅烷醇）侧基。 还公开了如此制备的预聚物，聚合物和部分封闭的聚合物。

    Laser
    6.
    发明申请
    Laser 失效
    激光

    公开(公告)号：US20030053500A1

    公开(公告)日：2003-03-20

    申请号：US09956493

    申请日：2001-09-18

    Applicant: DSO National Laboratories

    Inventor： Poh Boon Phua ,  Kin Seng Lai ,  Rui Fen Wu ,  Yuan Liang Lim ,  Wei Pin Ernest Lau

    IPC: H01S003/14 ,  H01S003/091 ,  H01S003/092

    CPC classification number: H01S3/0941 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/1638 ,  H01S3/1643

    Abstract: A device for producing laser radiation, the device comprising: an elongate sample of a quasi-three-level laser material; a source of pumping radiation; and a concentrator configured such that at least some of the pumping radiation emitted by the source of pumping radiation is concentrated by the concentrator and subsequently enters the sample through a side surface thereof.

    Abstract translation: 一种用于产生激光辐射的装置，该装置包括：准三级激光材料的细长样品; 泵送辐射源; 以及集中器，其被配置为使得由泵送辐射源发射的至少一些泵浦辐射由浓缩器集中并随后通过其侧表面进入样品。

    Tm:YAG laser
    7.
    发明申请
    Tm:YAG laser 失效
    Tm：YAG激光

    公开(公告)号：US20020159495A1

    公开(公告)日：2002-10-31

    申请号：US09845945

    申请日：2001-04-30

    Applicant: DSO National Laboratories

    Inventor： Poh Boon Phua ,  Kin Seng Lai ,  Rui Fen Wu ,  Yuan Liang Lim ,  Wei Pin Ernest Lau

    IPC: H01S003/091

    CPC classification number: H01S3/08 ,  H01S3/094 ,  H01S3/1616

    Abstract: A device for producing laser radiation having a wavelength of about 2 nullm, the device comprising: a solid-state sample capable of producing lasing transitions corresponding to a wavelength of about 2 nullm; and a source of pumping radiation having a wavelength of about 1 nullm, the source being arranged so that at least some of the radiation produced thereby is absorbed by the solid-state sample, causing the solid-state sample to emit radiation having a wavelength of about 2 nullm.

    Abstract translation: 一种用于产生具有约2μm波长的激光辐射的装置，该装置包括：能够产生对应于约2μm波长的激光跃迁的固态样品; 以及具有大约1um的波长的泵浦辐射源，所述源被布置成使得由此产生的辐射中的至少一些被固态样品吸收，使得固态样品发射波长为 约2公斤

    Chemical dosimeter
    9.
    发明申请
    Chemical dosimeter 失效
    化学剂量计

    公开(公告)号：US20030215958A1

    公开(公告)日：2003-11-20

    申请号：US10209755

    申请日：2002-07-31

    Applicant: DSO National Laboratories

    Inventor： Pong Boon Kin ,  Ang Kiam Wee

    IPC: G01N001/22

    CPC classification number: G01N1/2273 ,  G01N1/40 ,  G01N1/405 ,  G01N2001/2276 ,  Y10T436/255 ,  Y10T436/25875

    Abstract: A chemical dosimeter comprising: a chamber defined by a heat resistant mesh; and a quantity of an adsorbent contained within the chamber; the arrangement being such that gas may diffuse into the chamber through the heat resistant mesh so that chemicals in the gas may be adsorbed by the adsorbent.

    Abstract translation: 一种化学剂量计，包括：由耐热网格限定的室; 以及包含在所述室内的一定量的吸附剂; 该布置使得气体可以通过耐热网扩散到室中，使得气体中的化学物质可被吸附剂吸附。

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