公开(公告)号：EP1602942A1

公开(公告)日：2005-12-07

申请号：EP05076808.4

申请日：2002-07-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Meneely, Clinton T.

IPC: G01S17/93

CPC classification number: G01S17/58 ,  B64D45/08 ,  G01C23/005 ,  G01P5/26 ,  G01S7/4802 ,  G01S7/481 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/4817 ,  G01S7/483 ,  G01S17/42 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933

Abstract: A block arrangement of optical elements is provided for use as a transmitter/receiver for a light detection and ranging (LIDAR) system. The block arrangement comprises:

a plurality of glass modules aligned together as a block to form a plurality of optical paths therein and secured together to maintain said alignment;
a collimated light source secured to said block for generating a coherent beam of light over at least one optical path in said block which guides said coherent beam of light to an exit point of said block; and
a light detector secured to said block.

The block serves for receiving a return coherent beam of light and is configured to conduct said return coherent beam of light to the light detector over at least one other optical path formed in said block.

Abstract translation: 提供光学元件的块布置用作光检测和测距（LIDAR）系统的发射器/接收器。 块布置包括：多个玻璃模块，其一起排列成块，以在其中形成多个光路，并固定在一起以保持所述对准; 准直的光源，固定到所述块，用于在所述块中的至少一个光路上产生相干的光束，其将所述相干光束引导到所述块的出口点; 以及固定到所述块的光检测器。 该块用于接收返回的相干光束，并且被配置为通过形成在所述块中的至少一个其它光路将所述返回相干光束传导到光检测器。

公开(公告)号：EP1348981A3

公开(公告)日：2003-11-19

申请号：EP03251639.5

申请日：2003-03-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D.

IPC: G01S17/93 ,  G01S7/486

CPC classification number: G01S7/4818 ,  B64D45/08 ,  G01C23/005 ,  G01P5/26 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/4817 ,  G01S7/483 ,  G01S7/486 ,  G01S7/51 ,  G01S17/42 ,  G01S17/58 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933

Abstract: A distributed laser based obstacle awareness system for use on-board an aircraft comprises: a plurality of obstacle detecting sensors disposable at a corresponding plurality of locations of the aircraft for emitting laser energy from the aircraft into a predetermined region of space and for receiving return laser energy from an obstacle in the predetermined region of space; a laser source for emitting a laser beam along an optical path; and a plurality of bistatic optical channels. Each channel comprises a plurality of transmission fiber optic cables and at least one receiver fiber optic cable and extends from the laser source to a corresponding obstacle detecting sensor of the plurality to direct the laser beam from the optical path to its corresponding obstacle detecting sensor of the plurality for emission into the corresponding predetermined region of space; and a light detector. Return laser energy from an obstacle received by any one of the obstacle detecting sensors is propagated through the receiver fiber optic cable of the corresponding optical channel to the light detector for use in detection of the obstacle in the corresponding predetermined region of space. In one embodiment, an optical switch is disposed in the optical path to redirect the laser beam in a time sequence manner from the optical path to selected optical channels of the plurality.

公开(公告)号：EP1423732B1

公开(公告)日：2009-10-28

申请号：EP02756520.9

申请日：2002-07-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Meneely, Clinton T.

IPC: G01S17/93

CPC classification number: G01S7/4817 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/483 ,  G01S17/42 ,  G01S17/58 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933

公开(公告)号：EP1569007A3

公开(公告)日：2005-11-02

申请号：EP05251141.7

申请日：2005-02-25

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Meneely, Clinton T.

IPC: G01S7/48 ,  G01N21/25 ,  G01S17/42 ,  G01S17/89 ,  G01S17/87 ,  G01S7/484

CPC classification number: G06K9/4652 ,  G01N21/251 ,  G01N21/359 ,  G01S7/4802 ,  G01S7/484 ,  G01S17/87 ,  G01S17/89

Abstract: A method of identifying an object in a laser beam illuminated scene based on material types comprises the steps of: emitting a pulsed beam of laser energy, each beam pulse comprising a plurality of different discrete wavelength emission components; illuminating a predetermined scene with the pulsed beam; receiving return laser pulses from objects within the illuminated scene, each return laser pulse comprising return components corresponding to the plurality of different discrete wavelength emission components; determining spectral reflectance values for the plurality of return components of each return laser pulse; determining a material type for each return laser pulse of the illuminated scene based on the plurality of reflectance values of the corresponding return pulse; indexing each determined material type to a position in the illuminated scene; and identifying an object in the illuminated scene based on material types and indexed positions thereof in the scene. A counterpart system for carrying out the method is also disclosed.

公开(公告)号：EP1423732A2

公开(公告)日：2004-06-02

申请号：EP02756520.9

申请日：2002-07-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Meneely, Clinton T.

IPC: G01S17/93

CPC classification number: G01S7/4817 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/483 ,  G01S17/42 ,  G01S17/58 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933

Abstract: A LIDAR system for measuring flow velocity in three axes comprises: a LIDAR arrangement of optical elements for generating a coherent beam of light and directing the coherent beam of light by at least one rotationally operated optical element from the system with a predetermined pattern, the at least one rotationally operated optical element also for receiving reflections from particles along the predetermined pattern and directing the beam reflections to a light detector which converts the beam reflections into representative electrical signals; and a processor for detecting bursts from the electrical signals which are representative of light beam reflections from at least one particle substantially at a corresponding position along the predetermined pattern, and for computing a Doppler frequency for each of a selected plurality of detected bursts from the signal content thereof. The processor also capable of associating the selected plurality of detected bursts with their corresponding positions along the predetermined pattern and for computing a three axis flow velocity measurement from at least three of the selected plurality of computed Doppler frequencies and their corresponding positions along the predetermined pattern. A method of measuring flow velocity in three axes is further disclosed.

公开(公告)号：EP1602942B1

公开(公告)日：2007-04-04

申请号：EP05076808.4

申请日：2002-07-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Meneely, Clinton T.

IPC: G01S17/93

CPC classification number: G01S17/58 ,  B64D45/08 ,  G01C23/005 ,  G01P5/26 ,  G01S7/4802 ,  G01S7/481 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/4817 ,  G01S7/483 ,  G01S17/42 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933

公开(公告)号：EP1441236A1

公开(公告)日：2004-07-28

申请号：EP03257845.2

申请日：2003-12-12

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Pesik, Joseph T.

IPC: G01S17/89 ,  G01S17/93 ,  G01S7/481 ,  G01S7/483

CPC classification number: G01S7/4817 ,  G01S7/4811 ,  G01S7/483 ,  G01S7/499 ,  G01S17/42 ,  G01S17/89 ,  G01S17/933

Abstract: A forward looking cross-track laser altimeter comprises: a first configuration of optical elements for guiding pulsed laser beams along a first optical path; a mirror element coupled to a scanner and disposed in the first optical path, the scanner operative to oscillate the mirror element to sweep the reflected laser beams back and forth across a line at a predetermined frequency; the scanner and mirror element configurable to reflect the pulsed laser beams along paths forward and downward at a predetermined angle to the flight path of the aircraft, wherein the pulsed laser beam paths are caused to be line swept across a ground track forward the aircraft; the mirror element for receiving returns of the pulsed laser beams from the terrain and objects on the terrain forward the aircraft and reflecting the returns along a second optical path to a light detector which produces a return signal in response thereto; a first circuit governed by the return signals for measuring times-of-flight of the returns and generating time-of-flight signals corresponding thereto; the scanner for generating a line sweep position signal; and a second circuit for generating for each return a data profile comprising range and line sweep position thereof based on the corresponding time-of-flight and position signals.

Abstract translation: 前视横轨道激光高度计包括：用于引导脉冲激光束沿第一光路的光学元件的第一构造; 反射镜元件耦合到扫描仪和在所述第一光路设置，扫描仪可操作以摆动反射镜元件在预定频率下扫反射的激光束来回跨越线; 配置的，以向前和向下反射沿着路径的脉冲激光束以预定的角度到飞机的飞行路径，worin脉冲激光束路径上的扫描仪和反射镜元件被导致跨越地面轨迹前进的飞行器线横扫; 用于从地面和物体对地形向前飞行器接收所述脉冲激光束的返回，并反映到沿光检测器，其响应于此产生一个返回信号的第二光路中的返回反射镜元件; 由复位信号，用于测量时间飞行的返回并产生时间飞行信号与其对应支配的第一电路; 扫描仪，用于产生线扫描位置信号; 和用于生成用于每个第二电路返回其基于数据分布包括范围和线扫描位置时间飞行和位置信号相对应的。

公开(公告)号：EP1428046A2

公开(公告)日：2004-06-16

申请号：EP02748201.7

申请日：2002-07-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Meneely, Clinton T.

IPC: G01S17/00

CPC classification number: G01S17/58 ,  B64D45/08 ,  G01C23/005 ,  G01P5/26 ,  G01S7/4802 ,  G01S7/481 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/4817 ,  G01S7/483 ,  G01S17/42 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933

Abstract: A combined system of a LOAS and a LIDAR system comprises: a LIDAR arrangement of optical elements for generating a first coherent beam of light at a first predetermined wavelength; a LOAS arrangement of optical elements for generating a second coherent beam of light at a second predetermined wavelength; a dichroic filter optical element for directing the first and second coherent beams of light substantially on a first common optical path towards an aperture of a beam expander; at least one output optical element which directs both of the expanded first and second coherent beams of light from the system, the at least one output optical element also for receiving and directing reflections of the first and second coherent beams of light to the beam expander wherein the beam reflections are collected; and wherein the dichroic filter optical element separates and directs the collected light corresponding to the first coherent beam back to the LIDAR arrangement of optical elements for use in determining flow velocity, and separates and directs the collected light corresponding to the second coherent beam back to the LOAS arrangement of optical elements for use in detecting at least one object.

公开(公告)号：EP1391382B1

公开(公告)日：2007-04-25

申请号：EP03254505.5

申请日：2003-07-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D.

IPC: B64D15/20

CPC classification number: G01S17/95 ,  B64D15/20 ,  G01N21/21 ,  G01S7/4802 ,  G01S7/499 ,  G01S17/42 ,  G01S17/87 ,  G08B19/02 ,  Y02A90/19

Abstract: An ice detection warning system (10) mountable on board an aircraft for inflight monitoring of the airspace ahead of the aircraft comprises: a first plurality of optical elements (18) configured to direct a pulsed laser beam at a first wavelength from a laser source (14) into the airspace ahead of the aircraft; a second plurality of optical elements (32) configured to separate received backscattering of light from the laser beam into a plurality of predetermined wavelengths; a plurality of light detectors (50,52) for detecting the light of the separated plurality of wavelengths, respectively, and generating respectively corresponding plurality of electrical signals representative of the light detected thereby; and a processor (80) for processing the plurality of electrical signals to determine if airspace conditions ahead of the aircraft are likely to cause ice accretion on the surface of the aircraft, and for generating a warning indicative thereof. In one embodiment, the warning system includes an optical scanner (100) operative to scan the pulsed laser beam into the airspace ahead of the aircraft with a predetermined scan pattern, the scanner also being operative to receive the backscattering of light from the pulsed laser beam and direct it to the second plurality of optical elements which is configured to separate the received backscattering of light into the plurality of predetermined wavelengths.

公开(公告)号：EP1428046B1

公开(公告)日：2006-04-26

申请号：EP02748201.7

申请日：2002-07-18

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： Jamieson, James R. ,  Ray, Mark D. ,  Meneely, Clinton T.

IPC: G01S17/93

CPC classification number: G01S17/58 ,  B64D45/08 ,  G01C23/005 ,  G01P5/26 ,  G01S7/4802 ,  G01S7/481 ,  G01S7/4812 ,  G01S7/4813 ,  G01S7/4817 ,  G01S7/483 ,  G01S17/42 ,  G01S17/87 ,  G01S17/88 ,  G01S17/933

Abstract: A combined system of a LOAS and a LIDAR system comprises: a LIDAR arrangement of optical elements for generating a first coherent beam of light at a first predetermined wavelength; a LOAS arrangement of optical elements for generating a second coherent beam of light at a second predetermined wavelength; a dichroic filter optical element for directing the first and second coherent beams of light substantially on a first common optical path towards an aperture of a beam expander; at least one output optical element which directs both of the expanded first and second coherent beams of light from the system, the at least one output optical element also for receiving and directing reflections of the first and second coherent beams of light to the beam expander wherein the beam reflections are collected; and wherein the dichroic filter optical element separates and directs the collected light corresponding to the first coherent beam back to the LIDAR arrangement of optical elements for use in determining flow velocity, and separates and directs the collected light corresponding to the second coherent beam back to the LOAS arrangement of optical elements for use in detecting at least one object.