公开(公告)号：US20070272880A1

公开(公告)日：2007-11-29

申请号：US10593485

申请日：2005-03-24

Applicant: Peter Coward ,  Neil Salmon

Inventor： Peter Coward ,  Neil Salmon

IPC: G01J3/00

CPC classification number: G01S13/89 ,  G01S7/024 ,  G01S7/282

Abstract: An improved millimetre wave illumination system includes at least one primary source of millimetre wave radiation, a reflecting surface and a baffle comprising a plurality of exit apertures arranged such that at least some of the radiation from the source is reflected from the reflective surface before proceeding to the baffle, characterised in that means are incorporated for generating a plurality of radiation field states within a pre-determined time interval. The baffle, source and reflector are preferably packaged into a container with the exit apertures providing an illumination output. The generation of the plurality of radiation field states provides an illumination at the illuminator output that is less spatially variable when integrated over the pre-determined time interval. Embodiments of the invention show means for generating the plurality of radiation field states including relative movement of the reflective surface, variable positioning of the source with respect to the reflective surface, and including multiple sources within a single system.

Abstract translation: 改进的毫米波照明系统包括至少一个毫米波辐射的主要源，反射表面和挡板，其包括多个出射孔，所述多个出射孔布置成使得来自源的至少一些辐射从反射表面反射， 挡板，其特征在于，装置用于在预定时间间隔内产生多个辐射场状态。 挡板，源和反射器优选地封装在容器中，出口孔提供照明输出。 多个辐射场状态的产生在照明器输出端提供了当在预定时间间隔内积分时在空间上变化较小的照明。 本发明的实施例示出了用于产生包括反射表面的相对运动，源相对于反射表面的可变定位以及在单个系统内包括多个源的多个辐射场状态的装置。

公开(公告)号：US20050168376A1

公开(公告)日：2005-08-04

申请号：US10513545

申请日：2003-05-01

Applicant: Peter Coward ,  Sean Price ,  Neil Salmon

Inventor： Peter Coward ,  Sean Price ,  Neil Salmon

IPC: G01S7/02 ,  G01S7/282 ,  G01S13/89 ,  G01V8/00 ,  H01Q13/18 ,  H01Q21/00 ,  H01Q21/06 ,  G01V3/12

CPC classification number: H01Q13/18 ,  G01S7/024 ,  G01S7/282 ,  G01S13/887 ,  G01S13/89 ,  G01V8/005 ,  H01Q21/0012 ,  H01Q21/064

Abstract: An illumination source of predominantly non-directional and incoherent millimeter-wave radiation for illuminating an area for passive millimeter-wave imaging comprises a container with at least a partly reflective internal surface and a plurality of exit apertures and a primary source of millimetre-wave radiation for emitting millimetre-wave radiation into the container. The primary source and the container are arranged so that a proportion of the millimetre-wave radiation emitted by the source undergoes reflection within the container before being emitted through the aperatures, such that the different paths lengths are at least equal to the coherence length of the radiation. This is facilitated if the bandwidth of the radiation is preferably at least 1 GHz. The container may be a box in which a waveguide is used to couple radiation from the primary source into the box. Alternatively, the container may be formed from a mesh and the plurality of holes is provided by the holes in the mesh.

Abstract translation: 用于照射被动毫米波成像区域的主要为非定向和非相干毫米波辐射的照明源包括具有至少部分反射内表面和多个出射孔的容器以及毫米波辐射的主要来源 用于将毫米波辐射发射到容器中。 主要源和容器被布置成使得源发射的毫米波辐射的一部分在通过温度发射之前在容器内经受反射，使得不同的路径长度至少等于 辐射。 如果辐射的带宽优选地至少为1GHz，则这是容易的。 容器可以是其中波导用于将来自主源的辐射耦合到盒中的盒子。 或者，容器可以由网状物形成，并且多个孔由网孔中的孔提供。

公开(公告)号：US20070188370A1

公开(公告)日：2007-08-16

申请号：US10592679

申请日：2005-03-29

Applicant: Peter Coward ,  Neil Salmon

Inventor： Peter Coward ,  Neil Salmon

IPC: G01S13/89

CPC classification number: G01V8/005 ,  G01S7/411 ,  G01S13/887 ,  G01S13/89

Abstract: A millimetre wave imaging apparatus and method capable of identifying the presence of relatively thin dielectric materials is disclosed. The method involves taking a plurality of millimetre wave images of a scene at different frequencies and analysing the images at different frequencies to look for frequency dependent effects in the scene. Relatively thin dielectric materials can lead to interference effects which can be detected. In one embodiment the imaging apparatus comprises a millimetre wave imager (2) connected to a processor (16) and at least one variable frequency illumination source (22a . . . d, 24a . . . d). The or each illumination source sweeps the illumination frequency across a reasonably wide bandwidth and the imager captures radiation returned from the scene at a number of different illuminating frequencies.

Abstract translation: 公开了能够识别相对薄的电介质材料的存在的毫米波成像装置和方法。 该方法涉及以不同频率拍摄场景的多个毫米波图像，并以不同频率分析图像以在场景中寻找与频率相关的效果。 相对薄的电介质材料可能会导致可以检测到的干扰效应。 在一个实施例中，成像设备包括连接到处理器（16）的毫米波成像器（2）和至少一个可变频率照明源（22a ... d，24a ...... d）。 该照明源或每个照明源在相当宽的带宽上扫描照明频率，并且成像器以多个不同的照明频率捕获从场景返回的辐射。

公开(公告)号：US20090284405A1

公开(公告)日：2009-11-19

申请号：US12084548

申请日：2006-11-08

Applicant: Neil Salmon ,  Tej P. Kaushal ,  David A. Millington

Inventor： Neil Salmon ,  Tej P. Kaushal ,  David A. Millington

IPC: G01S13/89

CPC classification number: G01V8/005 ,  G01K11/006 ,  H01Q21/08

Abstract: A passive detection device is disclosed comprising a plurality of antennas, receivers, and a digital beamformer, wherein the antennas and receivers are adapted to receive radiation of millimetre wavelengths from a near field region, to process and digitise it. The beamformer is adapted to process the received information and to generate static image information relating to the region. An indication means is provided to indicate the presence of objects of interest. The beamformer is preferentially adapted to generate information simultaneously in a plurality of planes at different distances from the apparatus. The indication means may comprise an array of pixels along the length of the apparatus to display image information, and may use the multi-planar information to construct images of the region comprising data from a plurality of planes. The invention has utility in security scanning applications such as at airports or other locations where security detection equipment is employed.

Abstract translation: 公开了一种被动检测装置，其包括多个天线，接收器和数字波束形成器，其中天线和接收器适于从近场区域接收毫米波长的辐射，以处理和数字化它。 波束形成器适于处理接收到的信息并产生与该区域有关的静态图像信息。 提供指示装置以指示感兴趣对象的存在。 波束形成器优选适于在与该装置不同的距离的多个平面中同时产生信息。 指示装置可以包括沿着设备的长度的像素阵列以显示图像信息，并且可以使用多平面信息来构造包括来自多个平面的数据的区域的图像。 本发明在诸如在机场或使用安全检测设备的其他位置的安全扫描应用中具有实用性。

公开(公告)号：US20070121103A1

公开(公告)日：2007-05-31

申请号：US11642741

申请日：2006-12-21

Applicant: Neil Salmon

Inventor： Neil Salmon

IPC: G01J1/42

CPC classification number: G01R29/0807 ,  G01K11/006

Abstract: Radiometers detect radio wavelength electromagnetic radiation and typically have an antenna (16), an amplifier (18) and a detector (20). All three of these components have response characteristics that may be dependent on temperature, and in the case of systems using radiometer arrays dependent upon temperatures throughout the system. Different temperatures across a multi-channel antenna and differential channel temperature response can result in poor image quality from imaging radiometers. Resolution of a linear array of detector horns is limited by the size of the horns. An imaging radiometer (10) uses a focusing polariser (36), a quarter wave plate (32), a rotating inclined disk (28), and a detector feed array (16) to perform a conical scan, and compensates for variation in operating temperature of a radiometer using one or more of a variety of techniques including calibrating channels relative to each other, calibrating channels using reference temperatures in-situo, and calibrating channels using temperature response predictions stored in the radiometer signal processor (22). Aspects of the invention also optimise image resolution, image quality and allow calibration.

Abstract translation: 辐射计检测无线电波长电磁辐射，并且通常具有天线（16），放大器（18）和检测器（20）。 这些组件中的所有三个具有可能依赖于温度的响应特性，并且在使用依赖于整个系统中的温度的辐射计阵列的系统的情况下。 多通道天线的不同温度和差分通道温度响应可能会导致成像辐射计的图像质量差。 检测器喇叭的线性阵列的分辨率受喇叭尺寸的限制。 成像辐射计（10）使用聚焦偏振器（36），四分之一波片（32），旋转斜盘（28）和检测器馈送阵列（16）来执行圆锥扫描，并且补偿操作中的变化 使用一种或多种各种技术的温度，包括相对于彼此校准通道，使用参考温度原位校准通道，以及使用存储在辐射计信号处理器（22）中的温度响应预测来校准通道。 本发明的方面还优化图像分辨率，图像质量并允许校准。

公开(公告)号：US20060232828A1

公开(公告)日：2006-10-19

申请号：US10550117

申请日：2004-03-18

Applicant: Neil Salmon

Inventor： Neil Salmon

IPC: H04N1/40

CPC classification number: G02B5/3058 ,  G01S3/789 ,  G01V8/005 ,  G02B26/0891 ,  G02B27/28

Abstract: A millimetre wave imaging apparatus comprises a scanning mechanism, a reflector lens and a receiver array. The scanning mechanism comprises two wedge prisms which scan radiation incident upon them across the receiver array in an elliptical pattern. This optical configuration is such that the pupil plane, defined by the scanning mechanism, is located optically at the centre of curvature of the focusing surface, which reduces coma and astigmatism optical aberrations.

Abstract translation: 毫米波成像装置包括扫描机构，反射镜和接收器阵列。 扫描机构包括两个楔形棱镜，其以椭圆形图案扫描沿着接收器阵列入射到其上的辐射。 该光学构造使得由扫描机构限定的光瞳平面光学地定位在聚焦表面的曲率中心处，这降低了彗形像差和像散光学像差。