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A High Resolution Cooling Photoelectric Radar Based on Helical Line Scanning

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

Active Publication Date: 2022-05-03
上海铂米瑞光电技术有限公司
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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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  • A High Resolution Cooling Photoelectric Radar Based on Helical Line Scanning
  • A High Resolution Cooling Photoelectric Radar Based on Helical Line Scanning
  • A High Resolution Cooling Photoelectric Radar Based on Helical 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 effi...

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Abstract

A high-resolution cooling photoelectric radar based on helical line scanning, including: infrared field mirror, swing mirror drive circuit, infrared processing circuit, infrared detector, infrared telescope, compensation swing mirror, slip ring, two-dimensional turntable, turntable Drive circuit and interface circuit; the turntable drive circuit drives the rotation of the two-dimensional turntable and feeds back the position signal to the computer through the interface circuit; the swing mirror drive circuit drives and compensates the swing mirror to swing in the two directions of azimuth and pitch, and is used by the infrared telescope optics The enlarged image is collected by the infrared detector and transmitted to the infrared processing circuit after passing through the compensation swing mirror and the infrared field mirror in turn. The infrared processing circuit transmits the processed image signal to the computer, and also sends control signals and synchronization signals to the swing scan Mirror drive circuit and turntable drive circuit. The invention adopts a two-dimensional compensation swing mirror to enable the photoelectric radar to perform helical scanning, realize high-resolution imaging, and eliminate abnormal imaging during the raising process of the pitch axis.

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 Patents(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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