公开(公告)号：US4110752A

公开(公告)日：1978-08-29

申请号：US784871

申请日：1977-04-05

申请人： Filippo Neri

发明人： Filippo Neri

IPC分类号： G01S13/68 ,  G01S9/02

CPC分类号： G01S13/68

摘要： A system for the automatic correction of the nodding elevation errors for radars tracking targets at low height, comprising in a conventional mode a receiving and transmitting group associated with an intermediate frequency channel and with an antenna servo in azimuth and elevation, having a channel of azimuth error and a channel of elevation error, comprising means for detecting the variations of the amplitude of the echo signal due to the multiple reflection effected at low height and means for subtracting the signal formed by said variations from the channel of elevation error of the antenna servo.

摘要翻译： 一种用于自动校正低高度雷达跟踪目标的点头高程误差的系统，包括在常规模式中与中频通道相关联的接收和发射组以及具有方位角和仰角的天线伺服，具有方位角 误差和高程误差通道，包括用于检测由于在低高度处实现的多次反射引起的回波信号的振幅的变化的装置，以及用于从天线伺服的高程误差信道中减去由所述变化形成的信号的装置 。

公开(公告)号：US4084160A

公开(公告)日：1978-04-11

申请号：US682019

申请日：1976-04-30

申请人： Urs Leuenberger ,  Albert Schenkel

发明人： Urs Leuenberger ,  Albert Schenkel

IPC分类号： G01S7/02 ,  G01S13/44 ,  G01S13/68 ,  G01S3/80

CPC分类号： G01S13/4418

摘要： An arrangement for correcting deviations from the true bearing due to the effects of specular reflecting surfaces in target tracking radar installations having at least three primary feeds. At least two of the primary feeds are aligned such that a plane formed by the longitudinal axes of their radiation characteristics is disposed at least approximately perpendicular to the specular reflecting surface. At least one further primary feed is arranged such that the longitudinal axis of its radiation characteristic is located externally of such plane. A summation-difference network produces from the echo signals received by the primary feeds, apart from a summation signal, also two difference signals, and a cross-term signal formed in at least one measurement interval. From these signals there is produced an angle error signal which is divided into two components. In a signal processing stage there is obtained a correction signal in order to correct the angle error signal falsified by the specular reflection effects.

公开(公告)号：US4084159A

公开(公告)日：1978-04-11

申请号：US719768

申请日：1976-09-02

申请人： Wilbert Cleon Anderson ,  Vernal Wynn Thompson ,  Lawrence Walter Urry

发明人： Wilbert Cleon Anderson ,  Vernal Wynn Thompson ,  Lawrence Walter Urry

IPC分类号： G01S13/68 ,  G01S9/02

CPC分类号： G01S13/68

摘要： An antenna tracking system in which attenuation of gain in the azimuth tracking circuit as a function of the angle of elevation of the antenna is compensated. A correction circuit is provided in the servo loop for amplifying the azimuth error signal and rate gyro signal by an amount equal to the secant of the elevation angle.

公开(公告)号：US4032919A

公开(公告)日：1977-06-28

申请号：US713454

申请日：1976-08-11

申请人： Stephen J. Senger

发明人： Stephen J. Senger

IPC分类号： G01S13/68 ,  G01S9/02

CPC分类号： G01S13/68

摘要： A device for electronically correcting detected traverse error data from aracking radar antenna and receiver so that the azimuth error signal used to drive the positioning devices for the radar antenna are proportional to the true azimuth angular error. The traverse error signal produced by the radar is adjusted for various elevations by a correction factor which is generated from the detected elevation angle and proportional to the secant of that angle.

公开(公告)号：US3928850A

公开(公告)日：1975-12-23

申请号：US78360358

申请日：1958-12-29

申请人： SPERRY RAND CORP

发明人： POLLACK PHILIP ,  DI MATTEO PAUL L

IPC分类号： G01S7/36 ,  G01S13/44 ,  G01S13/68 ,  G01S9/14

CPC分类号： G01S7/36 ,  G01S13/4445 ,  G01S13/685

摘要： 1. In an angle tracking radar receiver, first means for generating a first signal representing the angular deviation relative to the radar tracking axis of a predetermined target, second means for generating a second signal representing the angular deviation relative to said axis of the target nearest the radar, means for comparing said first and second signals and for generating a first control signal upon the inequality of said first and second signals, means for sensing the closure within a predetermined range interval of said predetermined target and another target situated at lesser range, said means for sensing producing a second control signal upon said range closure, utilization signal generating means, and means for applying said first and second control signals to said last-named means to produce said utilization signal upon the concurrence of said first and second control signals.

摘要翻译： 1.一种角度跟踪雷达接收机，用于生成表示相对于预定目标的雷达跟踪轴的角度偏差的第一信号的第一装置，用于生成表示相对于目标的所述轴的最小角度偏差的第二信号的第二装置 雷达，用于比较所述第一和第二信号并根据所述第一和第二信号的不等式产生第一控制信号的装置，用于在所述预定目标的预定范围间隔内检测关闭的装置和位于较小范围的另一目标的装置， 所述用于在所述范围关闭时产生第二控制信号的装置，利用信号发生装置以及用于在所述第一和第二控制信号的同时将所述第一和第二控制信号施加到所述最后命名装置以产生所述利用信号的装置 。

公开(公告)号：US3866219A

公开(公告)日：1975-02-11

申请号：US37685873

申请日：1973-07-05

申请人： HUGHES AIRCRAFT CO

发明人： KRAMER DAVID A ,  LAVAS GEORGE P

IPC分类号： G01S1/02 ,  G01S13/10 ,  G01S13/68 ,  G01S19/35 ,  G01S9/02 ,  G01S7/28

CPC分类号： G01S13/68 ,  G01S1/02 ,  G01S13/106

摘要： In an acquisition radar system of the type in which the antenna scans in a multiple-bar raster scan pattern, signals of different sets of characteristics, e.g., different PRF''s, are transmitted on adjacent bars. The elevation bar spacing is chosen to be less than 0.5 X theta b where theta b is the antenna 3dB elevation beamwidth so that any target within the pattern is illuminated by the signals of the different PRF''s.

摘要翻译： 在天线以多条光栅扫描图案扫描的类型的采集雷达系统中，在相邻的条上传输不同特征集合的信号，例如不同的PRF。 升降杆间距选择为小于0.5 xθb，其中θb是天线3dB仰角波束宽度，使得图案中的任何目标被不同PRF的信号照亮。

公开(公告)号：US3747095A

公开(公告)日：1973-07-17

申请号：US3747095D

申请日：1970-10-19

申请人： BELL TELEPHONE LABOR INC

发明人： WILSON R

IPC分类号： G01S13/68 ,  G01S9/02

CPC分类号： G01S13/68

摘要： A synchronous earth satellite typically describes a figure ''''8'''' pattern because the plane of its orbit is generally inclined and/or elliptical. To satisfactorily track this satellite motion, the Fourier components of the same in azimuth and elevation are calculated from the orbit parameters and a partial Fourier series synthesizer is utilized to derive a pair of voltages proportional to desired elevation and azimuth correction signals. The latter are then used to correct the original or normal positioning of the tracking antenna so that the same follows the figure ''''8'''' pattern described by the satellite.

公开(公告)号：US3735403A

公开(公告)日：1973-05-22

申请号：US3735403D

申请日：1971-08-02

申请人： RAYTHEON CO

发明人： SYKES D

IPC分类号： G01S13/68 ,  G01S3/56 ,  G01S9/52

CPC分类号： G01S13/68

摘要： A conical scan signal receiver using digital computation apparatus for calculating angle tracking data is disclosed. The angle tracking data of a selected target are digitally calculated by determining the relative level of target related energy between an ''''up'''' elevation channel, a ''''down'''' elevation channel, a ''''right'''' azimuthal channel and a ''''left'''' azimuthal channel.

摘要翻译： 公开了一种使用数字计算装置计算角度跟踪数据的圆锥扫描信号接收机。 通过确定“上”高程通道，“下”高程通道，“右”方位通道和“左”方位通道之间的目标相关能量的相对水平，数字地计算所选目标的角度跟踪数据。

公开(公告)号：US3710390A

公开(公告)日：1973-01-09

申请号：US65891557

申请日：1957-05-01

申请人： HUGHES AIRCRAFT CO

发明人： KREINHEDER D

IPC分类号： G01S13/68 ,  G01S9/22

CPC分类号： G01S13/68

摘要： 6. An electronic lobe switching system for locating a target in space comprising: a simultaneous lobing antenna including four symmetrically positioned radiators defining the corners of a square, and a plurality of intercoupled hybrid junctions having four input terminals, a sum output terminal, an azimuth output terminal and an elevation output terminal, each of said radiators being coupled to one of said input terminals and adapted to excite a microwave signal therein representative of a microwave signal received from said target, said plurality of hybrid junctions being adapted to develop a sum signal in said sum terminal, an azimuth signal in said azimuth terminal and an elevation signal in said elevation terminal representative of the range, the azimuth and the elevation of said target respectively; a receiver responsive to a microwave error signal and a reference signal and adapted to develop demodulated error voltages representative of the azimuth and elevation of said target; and a switching circuit responsive to said sum signal, said azimuth signal and said elevation signal and coupling and said simultaneous lobing antenna to said receiver, said switching circuit being adapted to develop said microwave error signal and including a microwave two-channel switch, a microwave phase inverter, adder means, and an electronic reference generator for developing said reference signal and first and second control signals, said switch being coupled to said phase inverter and to said generator and responsive to said first control signal for sequentially applying either said azimuth signal or said elevation signal to said phase inverter, said phase inverter being coupled to said generator and being responsive to said second control signal for sequentially introducing a 180* phase shift to the sequentially applied azimuth or elevation signal, and adder means coupling said phase inverter to said sum terminal and being adapted to mix the sequentially phase-inverted signal from said phase inverter and said sum signal to develop said microwave error signal.

公开(公告)号：US3564596A

公开(公告)日：1971-02-16

申请号：US3564596D

申请日：1962-06-29

申请人： US NAVY

发明人： PRYOR CABELL N JR

IPC分类号： G01S3/807 ,  G01S13/68 ,  G06F15/34

CPC分类号： G01S3/807 ,  G01S13/68

摘要： 3. A LOGIC DECISION CIRCUIT COMPRISING A FIRST AND A SECOND AND GATE EACH HAVING AN INPUT FOR RECEIVING PULSES, AN OUTPUT TERMINAL AND AN ENABLING MEANS FOR PASSING THE INPUT PULSES TO THE OUTPUT TERMINAL DURING A FIRST AND SECOND PERIOD OF TIME RESPECTIVELY, A FIRST AND A SECOND RESETTABLE DIVIDE-BY-TWO CIRCUIT EACH HAVING AN INPUT TERMINAL CONNECTED TO A DIFFERENT ONE OF THE SAID FIRST AND SECOND AND GATES FOR RECEIVING THE PASSED PULSES, AN OUTPUT TERMINAL FOR PASSING EVERY SECOND RECEIVED PULSE, AND A RESET TERMINAL FOR SETTING THE FIRST AND SECOND DIVIDE-BY-TWO CIRCUITS IN AN INITIAL CONDITION FOR PASSING EVERY SECOND PULSE RECEIVED, A MULTI-STAGE RESETTABLE DECISION COUNTER MEANS CONNECTED TO BOTH OF SAID FIRST AND SECOND DIVIDE-BY-TWO CIRCUITS FOR COUNTING ALL PULSES PASSED BY SAID LAST-NAMED CIRCUITS AND PRODUCING AN OUTPUT PULSE WHENEVER THE SUM OF PULSES RECEIVED BY BOTH OF SAID FIRST AND SECOND DIVIDE-BY-TWO CIRCUITS IS GREATER THAN TWICE THE COUNTING CAPACITY OF THE DECISION COUNTER, AND PRODUCING NO OUTPUT PULSE WHENEVER THE TOTAL SUM OF PULSES RECEIVED BY SAID FIRST AND SECOND DI-

VIDE-BY-TWO CIRCUITS IS LESS THAN TWICE THE COUNTING CAPACITY OF DECISION COUNTER, AND PRODUCING AN OUTPUT PULSE WHENEVER THE SUM OF PULSES RECEIVED BY SAID FIRST AND SECOND DIVIDE-BY-TWO CIRCUITS IS EQUAL TO TWICE THE COUNTING CAPACITY OF THE COUNTER MEANS AND OBTAINED BY SUMMING AN EVEN NUMBER OF PULSES TO SAID FIRST DIVIDE-BYTWO CIRCUIT AND AN EVEN NUMBER OF PULSES TO SAID SECOND DIVIDE-BY-TWO CIRCUIT, AND PRODUCING NO OUTPUT PULSE WHENEVER THE SUM OF PULSES RECEIVED BY SAID FIRST AND SECOND DIVIDE-BY-TWO CIRCUITS IS EQUAL TO TWICE THE COUNTING CAPACITY OF THE COUNTER MEANS AND OBTAINED BY SUMMING AND OFF NUMBER OF PULSES TO SAID FIRST DIVIDE-BY-TWO CIRCUIT AND AN ODD NUMBER OF PULSES TO SAID SECOND DIVIDE-BY-TWO CIRCUIT, AND RESET MEANS FOR SETTING SAID, FIRST AND SECOND DIVIDE-BY-TWO CIRCUITS AND SAID DECISION COUNTER IN AN INITIAL CONDITION AT THE BEGINNING OF A CYCLE OF OPERATION.