High-resolution refrigeration photoelectric radar based on spiral line scanning

A high-resolution, photoelectric radar technology, applied in radio wave measurement system, re-radiation of electromagnetic waves, utilization of re-radiation, etc., can solve problems such as abnormal imaging, achieve high resolution and eliminate abnormal imaging

Active Publication Date: 2020-06-26
上海铂米瑞光电技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a problem with this method: abnormal imaging will inevitably be caused during the elevation of the pitch axis, because the compensation pendulum mirror is one-dimensional, and it can only compensate for smearing in the horizontal direction

Method used

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  • High-resolution refrigeration photoelectric radar based on spiral line scanning
  • High-resolution refrigeration photoelectric radar based on spiral line scanning
  • High-resolution refrigeration photoelectric radar based on spiral line scanning

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Embodiment Construction

[0035] The present invention is described in further detail now in conjunction with accompanying drawing.

[0036] Such as figure 1 The photoelectric radar system shown includes an infrared field mirror 0, a swing mirror drive circuit 1, a compensation swing mirror 5, an infrared telescope 4, an infrared detector 3, an infrared processing circuit 2, a two-dimensional turntable 7, a slip ring 6, and a turntable Drive circuit 8, interface circuit 9. Typical parameters of the system are as follows:

[0037] Detector resolution: 640×512;

[0038] Detector frame frequency: 120Hz;

[0039] Detector signal output form: roller shutter output;

[0040] Horizontal field of view: 9°;

[0041] Vertical viewing angle: 7.2°;

[0042] Telescope multiple: 3x.

[0043] The parameters of the two-dimensional compensation swing mirror are as follows:

[0044] Fast axis scanning frequency: ≥100Hz@±7° (mechanical angle);

[0045] Swing angle: ≥±8° (mechanical angle);

[0046] Scanning eff...

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Abstract

The invention relates to a high-resolution refrigeration photoelectric radar based on spiral line scanning. The high-resolution refrigeration photoelectric radar comprises an infrared field lens, a swing scanning lens driving circuit, an infrared processing circuit, an infrared detector, an infrared telescope, a compensation swing scanning lens, a slip ring, a two-dimensional turntable, a turntable driving circuit and an interface circuit. The turntable driving circuit drives the two-dimensional turntable to rotate and feeds back a position signal to a computer through the interface circuit; the swing scanning lens driving circuit drives a compensation swing scanning mirror to swing in an azimuth direction and a pitching direction. An image optically amplified by the infrared telescope sequentially passes through the compensation swing scanning mirror and the infrared field lens, the amplified image is collected by the infrared detector and transmitted to the infrared processing circuit, the infrared processing circuit transmits a processed image signal to the computer, and a control signal and a synchronous signal are further sent to the swing scanning lens driving circuit and theturntable driving circuit. The two-dimensional compensation swing scanning mirror is adopted, so that the photoelectric radar can perform spiral line scanning to realize high-resolution imaging; andabnormal imaging in the pitch axis lifting process is eliminated.

Description

technical field [0001] The invention belongs to the field of photoelectric radar, in particular to a high-resolution cooling photoelectric radar based on helical line scanning. Background technique [0002] Photoelectric radar is a kind of equipment that uses photoelectric technology to achieve radar effects. It uses infrared and visible light detectors to passively find targets, and the detectors are carried on a turntable for rapid 360° continuous scanning. Since the photoelectric radar rotates continuously, instead of stopping once, the detector will appear blurred due to image smearing. In order to eliminate image smearing, the image-side one-dimensional compensation oscillating mirror is generally used for cooled infrared detectors, and the object-side one-dimensional compensation oscillating mirror is generally used for uncooled infrared detectors. By compensating the reverse rotation of the pendulum mirror, the image of the detector can be relatively static within on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89G01S7/481
CPCG01S17/89G01S7/4817
Inventor 樊强王昌森
Owner 上海铂米瑞光电技术有限公司
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