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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
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。
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公开(公告)号：US3787835A
公开(公告)日：1974-01-22
申请号：US3787835D
申请日：1972-05-05
Applicant: INT STANDARD ELECTRIC CORP
Inventor： MATHIESEN O
CPC classification number: G06F1/025 , G01C19/38 , G06F2101/04 , H03M1/00 , H03M1/08
Abstract: A gyro-compass (synchro) analog output data encoder system for open-loop control of a digital bearing angle indicator in degrees and decimal parts of degrees. Applicable, in general, to digital presentation of shaft angle changes at a remote location.
Abstract translation: 陀螺罗盘（同步）模拟输出数据编码器系统，用于数字轴承角度指示器的开环控制，以度数和十进制度为单位。 一般来说，适用于远程位置的轴角度变化的数字显示。
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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
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.
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