公开(公告)号：US3728546A

公开(公告)日：1973-04-17

申请号：US3728546D

申请日：1972-03-22

申请人： PHILIPS CORP

发明人： DESVIGNES F ,  DOITTAU F

IPC分类号： G01S3/783 ,  H04N5/33 ,  G01J1/10

CPC分类号： H04N5/33 ,  G01S3/783

摘要： Compensation of radiation towards outer space for horizon sensor thermopiles. Electronic circuit elements which form part of the device for controlling the compensating source are incorporated in a metallic material which consequently radiates to the thermopiles a thermal power which is proportional to the power which passes through these elements. Thus substantially all the power consumed is used in this source, so that the power consumption is reduced to a minimum. Applications for compensation of radiation towards outer space which gives rise to zero errors in the case of differences in sensitivity between the detectors in the attitude sensors.

摘要翻译： 地平线传感器热电堆对外层空间的辐射补偿。

公开(公告)号：US3790890A

公开(公告)日：1974-02-05

申请号：US3790890D

申请日：1972-04-13

申请人： PHILIPS CORP

发明人： DOITTAU F ,  YTHIER J ,  HERBERT M

IPC分类号： G04F10/10 ,  G04F9/00

CPC分类号： G04F10/105

摘要： Device for measuring a time interval which comprises a capacitor which is charged during a first time interval and is discharged during a second time interval and also comprises two resistors which are connected to the inputs of an operational amplifier and to the capacitor in a manner such that the ratio between the charge and the discharge times is proportional to the ratio between the values of the resistors. By making this resistance ratio one to ten thousand short time intervals in the nanosecond range may be converted into time intervals which lie in the microsecond or millisecond range and hence can be measured with a higher degree of accuracy.

摘要翻译： 用于测量时间间隔的装置，其包括在第一时间间隔期间被充电并且在第二时间间隔期间被放电的电容器，并且还包括两个电阻器，所述两个电阻器以这样的方式连接到运算放大器和电容器的输入端，使得 充电和放电时间之间的比例与电阻器的值之间的比例成正比。 通过使该纳秒范围内的该电阻比为1〜1万个短时间间隔，可以转换为微秒或毫秒范围的时间间隔，因此可以以更高的精度测量。