SONG Jian-zhong, HAN Guang-liang, GU Hai-jun. Effective methods for raising the measured distance of the pulse laser spots removed target in outfield[J]. Editorial Office of Optics and Precision Engineering, 2002,(3): 300-303
SONG Jian-zhong, HAN Guang-liang, GU Hai-jun. Effective methods for raising the measured distance of the pulse laser spots removed target in outfield[J]. Editorial Office of Optics and Precision Engineering, 2002,(3): 300-303DOI:
A pre-estimation to open a CCD electronic shutter and image subtraction between the background image composed of a laser spot and the background are introduced in this paper. These techniques are effective to increase the tested distance of the pulse laser spots removed target in outfield during daytime. Manipulating the trigger pulses of a CCD electronic shutter
the shutter will be pre-opened. Therefore
the full energy of the laser spot lasting only several nano-seconds can be caught. Using the technique of the image subtraction
the bright background where a weak laser spot was merged
was eliminated and the image of the laser spot was emerged. The test results are also presented in this paper.
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references
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