公开(公告)号：WO2016016633A1

公开(公告)日：2016-02-04

申请号：PCT/GB2015/052175

申请日：2015-07-28

Applicant: BAE SYSTEMS PLC

Inventor： SHEPHARD, David John ,  WOOD, John, Michael

IPC: G01S13/93 ,  G01S7/292 ,  G01S7/41 ,  G01S7/40 ,  G01S13/536

CPC classification number: G01S13/536 ,  G01S7/412 ,  G01S7/415 ,  G01S13/93 ,  G01S2007/4095 ,  G01S2013/0245

Abstract: A method for suppressing the Jet Engine Modulation (JEM) clutter signal returns from compressor blades (26) in data sampled by a system for Foreign Object Debris (FOD) detection in the air intake (30) of a turbine assembly, the method comprising the steps of: (a) identifying in the data the start sample position and length in samples of a single complete shaft rotation; and (b) subtracting from a current rotation dataset the samples from a comparison rotation dataset corresponding to another complete single shaft rotation.

Abstract translation: 一种用于抑制喷气发动机调制（JEM）杂波信号的方法从在涡轮机组件的进气口（30）中由外来物体碎片（FOD）检测系统取样的数据中的压缩机叶片26返回，该方法包括 步骤：（a）在数据中识别单个完整轴旋转的样品中的起始样品位置和长度; 和（b）从当前旋转数据集中减去来自对应于另一完整单轴旋转的比较旋转数据集的样本。

公开(公告)号：WO2016016631A1

公开(公告)日：2016-02-04

申请号：PCT/GB2015/052173

申请日：2015-07-28

Applicant: BAE SYSTEMS PLC

Inventor： SHEPHARD, David John ,  WRIGHT, Barbara Helen

IPC: H01Q1/00 ,  H01Q1/28 ,  H01Q1/40 ,  H01Q1/42

CPC classification number: H01Q1/002 ,  H01Q1/28 ,  H01Q1/40 ,  H01Q13/06

Abstract: A dielectric loaded antenna, and method of designing same, for use in a high temperature environment, the antenna comprising an outer casing (14) of a material having a melting point of at least 1000°C, said outer casing (14) defining an inner channel, a first end of the channel defined by the casing defining a radiating aperture loaded with a section (Z4) of dielectric material of a first type which is chemically stable at a temperature of at least 1500°C, and a remaining length of said channel being loaded with sections (ZO - Z3) of at least one second type of dielectric material which is chemically stable at a temperature of at least 800°C, the dielectric constant of said first type of dielectric material being greater than that of the second type of dielectric material.

Abstract translation: 一种介电负载天线及其设计方法，用于高温环境中，所述天线包括具有至少1000℃熔点的材料的外壳（14），所述外壳（14）限定一个 内部通道，由壳体限定的通道的第一端限定辐射孔，辐射孔装载有在至少1500℃的温度下化学稳定的第一类型介电材料的部分（Z4），剩余的长度 所述通道装载有在至少800℃的温度下化学稳定的至少一种第二类型介电材料的部分（ZO-Z3），所述第一类介电材料的介电常数大于 第二类电介质材料。

公开(公告)号：WO2016016632A1

公开(公告)日：2016-02-04

申请号：PCT/GB2015/052174

申请日：2015-07-28

Applicant: BAE SYSTEMS PLC

Inventor： SHEPHARD, David John

IPC: G01S13/536 ,  G01S13/88 ,  G01S13/50 ,  F01D11/14 ,  G01B7/14 ,  G01S7/41

CPC classification number: F01D21/003 ,  B64D27/16 ,  B64D45/00 ,  B64D2045/0085 ,  F01D11/14 ,  F01D17/06 ,  F05D2220/323 ,  F05D2220/36 ,  F05D2260/80 ,  F05D2270/821 ,  G01S7/354 ,  G01S7/412 ,  G01S7/415 ,  G01S13/003 ,  G01S13/505 ,  G01S13/536 ,  G01S13/88 ,  G01S2007/358

Abstract: A blade monitoring system and method for a turbine assembly comprising rotating blades (14), the system comprising at least one sensor (10, 12) for transmitting a signal towards said rotating blades and detecting a time-varying return signal therefrom, and one or more processors (20) configured to calculate the time derivative of said return signal, generate a phase variation signal for said time derivative, determine minima points within said phase variation signal and measure said signal at said minima points so as to identify data representative of respective minimum path lengths, each said minimum path length corresponding to the returned signal as each respective blade passes said sensor, and generate, using said minimum path lengths, a time series of data representing the returned signal from individual blades as they pass the sensor.

Abstract translation: 一种用于涡轮机组件的叶片监控系统和方法，包括旋转叶片（14），所述系统包括用于向所述旋转叶片传输信号的至少一个传感器（10,12），并从其中检测时变返回信号，以及一个或 更多处理器（20）被配置为计算所述返回信号的时间导数，产生用于所述时间导数的相位变化信号，确定所述相位变化信号内的最小点，并测量所述最小点处的所述信号，以便识别表示相应 最小路径长度，每个所述最小路径长度对应于每个相应刀片通过所述传感器时返回的信号，并且使用所述最小路径长度生成表示来自各个刀片的返回信号的时间序列，当它们通过传感器时。

公开(公告)号：WO2011121338A1

公开(公告)日：2011-10-06

申请号：PCT/GB2011/050606

申请日：2011-03-25

Applicant: BAE SYSTEMS PLC ,  GOULD, Dale Martin ,  HENDERSON, Robert Ian ,  SHEPHARD, David John ,  WRIGHT, Barbara Helen

Inventor： GOULD, Dale Martin ,  HENDERSON, Robert Ian ,  SHEPHARD, David John ,  WRIGHT, Barbara Helen

IPC: G01S7/35 ,  G01S13/58 ,  G01S13/66

CPC classification number: G01S7/35 ,  G01S13/44 ,  G01S13/449 ,  G01S13/583 ,  G01S13/66 ,  H01Q3/2658 ,  H01Q19/17 ,  H01Q25/007

Abstract: A projectile detection system, and method of detecting a projectile (for example a bullet), for use on a vehicle (100) (for example a helicopter), the projectile detection system comprising: a radar antenna array (4) arranged to transmit and receive microwave signals so as to provide a plurality of detection segments (40, 42, 44, 46) of a volume of airspace (38); one or more processors (3) arranged to: determine which segments (40, 42, 44, 46) microwave signals reflected by a projectile (10) are received from; determine timing information relating to a time order in which the received microwave signals are received; and determine directional information relating to a direction of travel of the projectile (10) using the determined segments (40, 42, 44, 46) and the determined timing information; wherein the microwave signals have a frequency between 1GHz and 30GHz.

Abstract translation: 射弹检测系统和检测用于车辆（100）（例如直升机）的弹丸（例如，子弹））的方法，所述射弹检测系统包括：雷达天线阵列（4） 接收微波信号以便提供一定数量的空域（38）的检测段（40,42,44,46）; 一个或多个处理器（3）被布置为：确定从弹药（10）反射的哪些段（40,42,44,46）反射的微波信号; 确定与接收到的微波信号的时间顺序有关的定时信息; 并使用所确定的段（40,42,44,46）和所确定的定时信息来确定与射弹（10）的行进方向有关的方向信息; 其中微波信号具有在1GHz和30GHz之间的频率。