公开(公告)号：EP0328621B1

公开(公告)日：1993-12-29

申请号：EP88907929.9

申请日：1988-07-18

Applicant: Hughes Aircraft Company

Inventor： CHODOS, Steven, L. ,  POPE, Gordon, T. ,  RUE, Arthur, K.

IPC: G01S3/78 ,  H04N7/18

CPC classification number: G01S3/7865

Abstract: Point and area target tracking are employed by a dual mode video tracker which includes both a correlation processor (30) and a centroid processor (32) for processing incoming video signals representing the target scene (20) and for generating tracking error signals over an entire video frame. A microcomputer (26) controls the operation of the correlation and centroid processors, as well as a preprocessor (28) which preconditions the incoming video signals. The tracker operates in any of several modes in which the correlation and centroid processors function either independently or cooperatively with each other. The correlation processor generates a reference map in pixel format which is used to produce azimuth and elevation optimal weighting values for each pixel in the field-of-view. The reference map is recursively updated. The track gate for the correlation processor is automatically sized using a gradient function derived from the optimal weighting values. The gradient function is also employed along with difference video to determine correlation tracking status. The correlation and centroid tracking errors may be combined to form a composite signal defining a true complementary function.

公开(公告)号：EP0307677B1

公开(公告)日：1993-11-03

申请号：EP88113836.6

申请日：1988-08-25

Applicant: Menke, Josef-Ferdinand, Dipl.-Ing.

Inventor： Menke, Josef-Ferdinand, Dipl.-Ing.

IPC: G01S3/78 ,  G01P13/00

CPC classification number: G01S3/789 ,  G01P13/00 ,  G01S3/781

公开(公告)号：EP0375744B1

公开(公告)日：1993-10-27

申请号：EP88910419.6

申请日：1988-11-25

Applicant: FÖRSVARETS FORSKNINGSANSTALT

Inventor： NISSBORG, Kurt

IPC: G01S3/78

CPC classification number: G01S3/783

Abstract: The present invention relates to a method to measure the angle of incidence for radiation and a detector to carry out the method. The background for the invention is that in certain electromagnetic radiation, for example laser light of different wavelengths from UV to IR, there occurs an irregularity, speckledness, that is among other things caused by turbulence in the atmosphere. This phenomenon gives rise to problems during the registration of a single or a few short pulses of radiation. Difficulties to reliably determine the angle to the source of radiation with high resolution can arise. This problem is solved by the invention by mounting two detector elements (1, 2) so close to each other that both detector elements receive essentially the same irradiance and in such a direction that the normals of respective detector element form a known angle beta with each other. One then calculates the angle of incidence alpha by means of the signals (S1, S2) from the detector elements (1, 2), that depend on the shape of the sensitivity beams, and said angle beta between the detector elements.

公开(公告)号：EP0308503B1

公开(公告)日：1992-05-20

申请号：EP88904728.8

申请日：1988-03-07

Applicant: Hughes Aircraft Company

Inventor： HIGA, Glenn, S. ,  MAROTTA, Daniel, A. ,  PAPA, Gerard, J.

IPC: G01S3/78

CPC classification number: G01S3/7864

Abstract: In a pointing system, an operator positions a primary trackgate (40) on a target (44) to maintain the system stable, during which time a secondary trackgate (42) is positioned on a new target (46). Alternatively, a previously partially acquired target (50) is better acquired by primary (48) and secondary (52) trackgates, thereby maintaining the pointing system stable.

公开(公告)号：EP0245562B1

公开(公告)日：1992-02-26

申请号：EP86309780.4

申请日：1986-12-15

Applicant: SPACE SYSTEMS / LORAL INC.

Inventor： Kamel, Ahmed ,  Graul, Donald W. ,  Chan, Fred N.T. ,  Gamble, Donald W.

IPC: G01C11/02 ,  G01S3/78

CPC classification number: G01C21/20 ,  H04N5/232

公开(公告)号：EP0139292B1

公开(公告)日：1991-01-23

申请号：EP84112406.8

申请日：1984-10-15

Applicant: HITACHI, LTD.

Inventor： Kamejima, Kohji ,  Hosoda, Yuji ,  Nakano, Yoshiyuki ,  Fujie, Masakatsu ,  Iwamoto, Taro ,  Honma, Kazuo ,  Yoshida, Takashi

IPC: G01S3/78 ,  G05D1/02

CPC classification number: G01S3/7865 ,  G05D1/0246 ,  G05D1/027 ,  G05D1/0272 ,  G05D1/0274

公开(公告)号：EP0388559A3

公开(公告)日：1991-01-09

申请号：EP89313056.7

申请日：1989-12-13

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Cain, Gary Lunn ,  Church, Gerald Henry ,  Sobottke, Mark Durward ,  Zalusky, James Thomas

IPC: G01B11/26 ,  G01S3/78

CPC classification number: G01S3/782 ,  G01B11/26 ,  G01C15/002

Abstract: Apparatus (100) operable in accordance with the method of the present invention for measuring the angle of incidence of a light beam or plane (108) relative to level comprises a photodetector array (102) for sensing the light and a level mirror (104) preferably comprising a pool of mercury. Optics (112, 114, 118, 120) are provided for transmitting the light to the photodetector array in alignment with the angle of incidence of the light (aligned light) and also after the light has been reflected from the mercury pool (reflected light). A shutter (106) is provided for separating aligned light from reflected light such that distinct signals representative of the two are generated by the photodetector array. The distinct signals are processed by up-counting and down-counting a counter circuit to determine the average centers of light spots representative of the aligned light and the reflected light and the distance between those average centers which is representative of the deviation of the light beam or plane (108) from level.

公开(公告)号：EP0392306A1

公开(公告)日：1990-10-17

申请号：EP90106256.2

申请日：1990-04-02

Applicant: QUESTECH INC.

Inventor： Wilmot, Donald W. ,  Taylor, Robert T.

IPC: F41G7/22 ,  G01S3/78

CPC classification number: G01S3/784 ,  F41G7/2253 ,  F41G7/2293

Abstract: A nonelectronic device tracks and homes in on a target to be destroyed by a projectile having a body in which the device is carried. An optical (14) lens disposed in a nose cone of the projectile body (10) receives and focuses infrared radiation (IR) or heat from the target, which is an electromagnetic field that may be emanating from an exhaust plume of an incoming enemy intercontinental ballistic missile. A detector converts the radiation focused by the lens (14) into thermal energy. A Golay-type cell (16) receives the thermal energy and converts it into a fluid signal that is transferred via a nonelectronic coupler (20) to a fluidic circuit. A fluidic rate gyro (24) seeks the target and guides the projectile towards the target to be destroyed. A key advantage of the invention is that the nonelectronic infrared heat tracking device is composed of inert mechanical elements and fluids. Therefore, the device is unaffected by intense magnetic and electromagnetic fields. Furthermore, the detector and the subsequent fluidic circuit are not subject to damage when the nonelectronic tracking device is exposed to the intense EM fields that are produced by rail gun launchers, microwave antisensor weapons, and the like, as is the case with conventional electronic trackers.

Abstract translation: 非电子设备跟踪目标上的家庭，由具有装置所在身体的射弹摧毁。 设置在射弹体（10）的鼻锥中的光学（14）透镜接收并聚焦来自靶的红外辐射（IR）或来自目标的热量，该电磁场可能是从进入的敌人洲际的排气羽流发出的电磁场 弹道式导弹。 检测器将由透镜（14）聚焦的辐射转换为热能。 格莱型电池（16）接收热能并将其转换成通过非电子耦合器（20）传送到流体回路的流体信号。 流体速率陀螺仪（24）寻求目标并引导射弹朝向被破坏的目标。 本发明的主要优点是非电子红外热跟踪装置由惰性机械元件和流体组成。 因此，器件不受强磁场和电磁场的影响。 此外，当非电子跟踪装置暴露于由铁路枪发射器，微波反射武器等产生的强烈EM场时，检测器和随后的流体回路不会受到损坏，如常规电子跟踪器 。

公开(公告)号：EP0385852A1

公开(公告)日：1990-09-05

申请号：EP90400541.0

申请日：1990-02-27

Applicant: AEROSPATIALE Société Nationale Industrielle

Inventor： Deniau, Patrice ,  Hadet, Christian ,  Laffitte, Olivier ,  Devars, Jean

IPC: G01S5/16 ,  G01S5/00 ,  G01S3/78 ,  H04N5/14

CPC classification number: H04N5/14 ,  G01S3/7864 ,  G01S5/0009 ,  G01S5/16

Abstract: Ce dernier comporte au moins une mire (14), une caméra vidéo (20) et une lampe à éclats (22) synchronisée sur les prises de vue de la caméra (20) par un circuit de déclenchement (24). Un boîtier électronique (26) de traitement du signal vidéo assure une conversion analogique numérique, une compression et un codage du signal vidéo. Le signal vidéo codé est transmis par des moyens de transmission (28) à des moyens pour analyser, traiter et visualisr (30) le signal codé transmis. La compression du signal consiste à extraire les contours des images enre­gistrées par la caméra (20).
Application à la restitution du mouvement d'un corps largué (10) à partir d'un lanceur (12).

Abstract translation: 此装置的至少一个测试图案（14），摄像机（20）和由一个触发电路（24）与摄像机（20）的拍摄同步闪光灯（22）的besteht。 用于处理视频信号的电子单元（26）提供用于模拟 - 数字转换，压缩和视频信号的编码。 编码的视频信号是通过对反式的分析，处理和显示一发送电路（28）的电路（30）发送的mitted编码信号。 信号压缩涉及提取由照相机（20）拍摄的图像的轮廓。 （10）从一个助推火箭（12）释放到身体的运动的重建中的应用。

公开(公告)号：EP0222885B1

公开(公告)日：1990-07-11

申请号：EP86903805.9

申请日：1986-05-09

Applicant: Hughes Aircraft Company

Inventor： SHIFRIN, Gordon, A.

IPC: G01S3/78

CPC classification number: G01J9/00 ,  B64F1/20 ,  G01J3/2803 ,  G01S1/70 ,  G01S3/784

Abstract: A spectral analyzer and direction indicator system (10) includes optical channels (20, 30, 40) for providing detected optical information indicative of incidence direction and spectral content of incident radiation. Each optical channel includes a reflector element (11, 17, 23) having a non-ruled section (11a, 17a, 23a) and a spectrally dispersing ruled section (11b, 17b, 23b); an analytical optical system (13, 19, 25); and a detector array (15, 21, 27). For each reflector element the non-ruled section is tilted in one or two directions relative to the ruled section. The disclosed spectral analyzer and direction indicator system is advantageously utilized as an aircraft based sensor in an aircraft landing system having ground based lasers (29L, 29R, 33L, 33R, 37L, 37R) directed into the landing approach path.