一种傅里叶干涉遥感仪器用激光探测器焦面自动装调装置

Abstract

本实用新型提供了一种傅里叶干涉遥感仪器用激光探测器焦面自动装调装置，涉及傅里叶红外遥感仪器技术领域，该装置包括激光探测器前放电路、激光探测器高速AD采样电路、激光探测器六轴位移台、激光探测器六轴位移台驱动模块、焦面自动装调主控模块。本实用新型的激光探测器焦面自动装调装置代替以往使用垫片对激光探测器安装结构的三个平移轴和三个旋转轴进行手动调节的方式。使用焦面自动装调装置，控制六轴位移台，实时测量采集激光干涉信号，通过对激光干涉信号的频率、幅值等参数，自动计算最佳焦面位置，完成激光探测器焦面位置调节，可以有效地提高傅里叶干涉遥感仪器的装调效率和精度。

Claims

1. An automatic focal plane adjustment device for a laser detector used in a Fourier interferometric remote sensing instrument, characterized in that, This includes a laser detector preamplifier circuit, a laser detector high-speed AD sampling circuit, a laser detector six-axis displacement stage, a laser detector six-axis displacement stage drive module, and a focal plane automatic assembly and adjustment main control module; The laser detector preamplifier circuit is connected to the laser detector, and the laser detector preamplifier circuit is also connected to the laser detector high-speed AD sampling circuit; the laser detector mounting structure is carried on the six-axis displacement stage of the laser detector, supporting degree of freedom adjustment on three translation axes and three rotation axes; the laser detector six-axis displacement stage is connected to the laser detector six-axis displacement stage drive module, and both the laser detector high-speed AD sampling circuit and the laser detector six-axis displacement stage drive module are connected to the focal plane automatic assembly and adjustment main control module.

2. The laser probe focal plane automatic alignment apparatus for a Fourier interferometric remote sensing instrument of claim 1, wherein, The laser detector is mounted on a six-axis displacement stage. The position of the laser detector mounting structure on three translational axes and three rotational axes is adjusted by the six-axis displacement stage to obtain the optimal focal plane position of the laser detector.

3. The automatic focal plane adjustment device for laser detectors in Fourier interferometric remote sensing instruments as described in claim 1, characterized in that, The laser detector preamplifier circuit includes a photovoltaic amplifier circuit, an MFB-type high-pass filter circuit, and a fifth-order Butterworth low-pass filter circuit. The signal input terminal of the photovoltaic amplifier circuit is connected to the laser detector, and the signal output terminal of the photovoltaic amplifier circuit is connected to the MFB-type high-pass filter circuit. The MFB-type high-pass filter circuit is connected to the fifth-order Butterworth low-pass filter circuit.

4. The laser probe focal plane automatic alignment apparatus for Fourier interferometric remote sensing instruments of claim 1 wherein, The six-axis displacement stage of the laser detector adopts an H-bridge drive circuit and uses a power MOSFET to bidirectionally control the stepper motor of the displacement stage, thereby performing stepper drive operation on the six-axis displacement stage of the laser detector used in the laser detector mounting structure.

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