公开(公告)号：US3859460A

公开(公告)日：1975-01-07

申请号：US30962572

申请日：1972-11-27

Applicant: BAIRD ATOMIC INC

Inventor： WESTELL WILLIAM E

IPC: G01S3/786 ,  G03F9/00 ,  H04N5/34

CPC classification number: G01S3/786

Abstract: An image tracking sensor system mounted to an inertial platform generates an analog image displacement signal for passive image stabilization of a scene image viewed from the platform. A radiometric signal having a frequency proportional to the relative motion between the scene image and a reticle is generated by the convolution of the image with the reticle. This signal is detected and electronically processed in a DC squareroot amplifier, a threshold decision logic and an analog to digital converter which generates a digital signal related to image velocity. The digital signal is measured by a digital differential analyzer doppler frequency comparator which generates digital signals defining image velocities relative to boresight. These digital velocities are integrated and displacements accumulated in a digital up-down counter tracking register. The accumulated displacements represent changes of image position relative to boresight. The accumulated digital displacements are read out of the tracking register by means of a digital to analog converter. An analog image displacement signal generated by the digital to analog converter is applied to the inertial platform for gyro-torquing stabilization control thereof.

Abstract translation: 安装到惯性平台的图像跟踪传感器系统产生用于从平台观看的场景图像的被动图像稳定的模拟图像位移信号。 通过图像与光罩的卷积产生具有与场景图像和光罩之间的相对运动成比例的频率的辐射信号。 该信号在DC平方根放大器，阈值判定逻辑和模数转换器中被检测和电子处理，该转换器产生与图像速度有关的数字信号。 数字信号由数字差分分析仪多普勒频率比较器测量，该比较器产生定义相对于视轴的图像速度的数字信号。 这些数字速度被积分，积分在数字上下计数器跟踪寄存器中。 累积位移表示相对于视轴的图像位置的变化。 累积的数字位移通过数模转换器从跟踪寄存器中读出。 由数模转换器产生的模拟图像位移信号被应用于用于陀螺仪扭矩稳定控制的惯性平台。

公开(公告)号：US3558211A

公开(公告)日：1971-01-26

申请号：US3558211D

申请日：1968-05-08

Applicant: BAIRD ATOMIC INC

Inventor： WESTELL WILLIAM E

IPC: G02B27/64 ,  G02B23/00

CPC classification number: G02B27/646

Abstract: IN ORDER TO ISOLATE THE IMAGE PRODUCED BY AN OPTICAL SYSTEM FROM ANGULAR VIBRATION OR THE LIKE, AT LEAST ONE OF THE OPTICAL COMPONENTS IS ESTABLISHED AS A PREDETERMINED INERTIAL MASS, THE INERTIAL MASS IS MOUNTED ON A RESILIENT SUSPENSION OF PREDETERMINED COMPLIANCE, AND THE INTERNAL MASS IS CONNECTED TO A DAMPING CONTROL OF PREDETERMINED RATE.