公开(公告)号：US3754266A

公开(公告)日：1973-08-21

申请号：US3754266D

申请日：1971-12-22

Applicant: INT STANDARD ELECTRIC CORP

Inventor： POPPE D ,  MATHIESEN O ,  ODEGAARD G

IPC: G01S3/14 ,  G01S3/06

CPC classification number: G01S3/143

Abstract: An updating control system for two channel direction finders which includes dual loop antennas and a sense antenna; and circuits for setting the direction finder to a ''''Frequency'''' condition during which the direction finder may be tuned to a new frequency and to a ''''Bearing'''' condition in which bearings corresponding to the new frequency are taken. Individual amplifying means are provided to connect each of the two loop antennas to a plate pair of a cathode ray tube. Circuits are also shown for updating (adjusting) the phase and gain of the two signals, and for interconnecting the inputs of the two amplifiers during the updating process and for instrumenting correction of quadrantal errors.

Abstract translation: 一种用于双通道测向器的更新控制系统，包括双环天线和感测天线; 以及用于将取向器设置到“频率”状态的电路，在该频率期间，取向器可以被调谐到新的频率，并且到达“轴承”状态，其中采用对应于新频率的轴承。 提供单独的放大装置以将两个环形天线中的每一个连接到阴极射线管的板对。 还示出了用于更新（调整）两个信号的相位和增益的电路，并且用于在更新过程期间互连两个放大器的输入以及用于校正四极差错。

公开(公告)号：US3778834A

公开(公告)日：1973-12-11

申请号：US3778834D

申请日：1972-05-04

Applicant: INT STANDARD ELECTRIC CORP

Inventor： POPPE D ,  ODEGAARD G

IPC: G01S3/14 ,  G01S3/34

CPC classification number: G01S3/143

Abstract: An updating (calibration) system for two channel direction finders comprising two loop antennas and a reference (sense) antenna. Individual receivers connect each of the two loop antennas to bearing measuring means and means are included for updating the gain and phase of the two receivers to equality. Apparatus is also included for interconnecting the input of the two receivers during the updating mode of operation to facilitate calibration (equalization) of the channels. A common signal source which is either the reference (sense) antenna or the one of the two loops having the greatest signal at the time, is applied to both signals through artificial antenna devices which are actually equalizers for calibration purposes.

Abstract translation: 用于包括两个环形天线和参考（感测）天线的两个信道测向器的更新（校准）系统。 单个接收器将两个环形天线中的每一个连接到轴承测量装置，并且包括用于将两个接收机的增益和相位更新为相等的装置。 还包括用于在更新操作模式期间互连两个接收机的输入以便于校准（均衡）信道的装置。 作为参考（感测）天线或当时具有最大信号的两个环路中的一个的公共信号源通过实际上用于校准目的的均衡器的人造天线装置施加到两个信号。

公开(公告)号：US3795001A

公开(公告)日：1974-02-26

申请号：US3795001D

申请日：1972-05-08

Applicant: INT STANDARD ELECTRIC CORP

Inventor： POPPE D ,  ODEGAAR G

IPC: G01S3/06 ,  G01S3/14 ,  G01S3/12

CPC classification number: G01S3/06 ,  G01S3/065 ,  G01S3/143

Abstract: A dual orthogonal loop antenna direction finding system having corresponding dual receiver channels and a reference (sense) antenna. The equipment is programmed through at least ''''Updating, '''' ''''Bearing,'''' ''''Sense'''' and ''''Display'''' modes in which receiver channels are phase and gain equalized, bearing readings are taken without regard to ambiguities, and corrected readings are displayed respectively. Bearing readings are stored before display until corrected by a process including relative bearing angle calculation against more than one reference vector.

Abstract translation: 具有对应的双重接收机通道和参考（感测）天线的双正交环形天线方向发现系统。 设备通过至少“更新”，“轴承”，“感应”和“显示”模式进行编程，其中接收机通道是相位和均衡的，承载读数不考虑模糊度，并且校正读数分别显示。 在显示之前存储轴承读数，直到通过包括针对多于一个参考矢量的相对承载角计算的过程来校正。

公开(公告)号：US3747107A

公开(公告)日：1973-07-17

申请号：US3747107D

申请日：1972-05-05

Applicant: INT STANDARD ELECTRIC CORP

Inventor： HOLMBOE C ,  POPPE D ,  MATHIESEN O

IPC: G01S3/06 ,  G01S3/14 ,  H03L7/14 ,  G01S3/04

CPC classification number: G01S3/14 ,  G01S3/065 ,  H03L7/14

Abstract: A local oscillator control device particularly for loop antenna direction finding equipment. Two equipment modes are provided, one for tuning and frequency surveillance and another for bearing determination, are provided. The local oscillator (LO) is manually controlled and also voltage controlled, the voltage control being imperative during tuning (''''Frequency'''' mode) but operates to stabilize the LO when the ''''Bearing'''' (reading) mode is enabled, within predetermined limits. The circuits operate to revert the mode from ''''Bearing'''' to ''''Frequency'''' whenever the manual LO tuning is activated or a predetermined drift limit is exceeded.

公开(公告)号：US3735410A

公开(公告)日：1973-05-22

申请号：US3735410D

申请日：1971-12-27

Applicant: INT STANDARD ELECTRIC CORP

Inventor： POPPE D

IPC: G01S3/14 ,  G01S3/10

CPC classification number: G01S3/143

Abstract: A calibration (updating) system for dual channel direction finders having two receiver channels associated with a corresponding pair of loop antennas. A cathode ray tube having orthogonal deflection elements is connected to present the two receiver channel outputs as an index line at the bearing angle. Means are included for calibrating the gain and phase characteristics of the channels automatically. A signal evaluation circuit employing self-adjusting feedback arrangement automatically injects a bearing offset during the gain and phase calibration (updating) process to correct for quadrantal errors.

Abstract translation: 具有与对应的一对环形天线相关联的两个接收器通道的双通道测向器的校准（更新）系统。 具有正交偏转元件的阴极射线管被连接以将两个接收器通道输出作为轴承角度的指标线呈现。 包括用于自动校准通道的增益和相位特性的手段。 采用自调整反馈装置的信号评估电路在增益和相位校准（更新）过程期间自动注入轴承偏移以校正四方误差。