Optics and Precision Engineering, Volume. 18, Issue 10, 2164(2010)

Experimental testing on characteristics of four-quadrant detector

ZHAO Xin*... TONG Shou-feng and JIANG Hui-lin |Show fewer author(s)
Author Affiliations
  • [in Chinese]
  • show less

    The basic characteristics of incident spots and effects of external space environments on a four-quadrant detector were researched when it was used to detect the spot center. The formulae of the output and sensitivity of the detector were proposed when the incident spots showed an elliptical Gaussian-distribution. An experimental system was set up to test and verify the characteristics of the quadrant detector in an indoor test and a field test. Experimental results demonstrate that the detector has higher detection accuracy and subdivision in the indoor test, and can offer a 36-subdivision with digital filtering at a limited sensitivity. By the voltage characteristic curves, the background lights, spot sizes and the ratio of signal to noise were studied. The experiments in the field were also completed between the two spots of 830 m and 12.5 km. It is pointed out that the influence of irradiance scintillation on the detector is rigider than that of the indoor test. When the refractive index structure parameter is 10-16, the subdivision is only 7 in a distance of 830 m, furthermore, it can not detect spots in 12.5 km for the subdivision is invalid.

    Tools

    Get Citation

    Copy Citation Text

    ZHAO Xin, TONG Shou-feng, JIANG Hui-lin. Experimental testing on characteristics of four-quadrant detector[J]. Optics and Precision Engineering, 2010, 18(10): 2164

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category:

    Received: Oct. 15, 2009

    Accepted: --

    Published Online: Dec. 7, 2010

    The Author Email: Xin ZHAO (gps.ins@163.com)

    DOI:

    CSTR:32186.14.

    Topics