Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Reexamination Certificate
2007-04-24
2007-04-24
Tarcza, Thomas H. (Department: 3662)
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
Reexamination Certificate
active
10503212
ABSTRACT:
A laser radar apparatus includes a mixer12for converting the frequency of an electric signal outputted from a photodetector11into a baseband frequency by using a modulating signal generated by an oscillator2. The laser radar apparatus carries out a coherent integral of the electric signal whose frequency has been converted by the mixer12, and measures the quality of scatterers which exist in the atmosphere from a result of the integral. As a result, even when the S/N ratio of the light signal received by a receiving optical unit8is low, the laser radar apparatus can detect the quality of the scatterers.
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Ando Toshiyuki
Asaka Kimio
Hirano Yoshihito
Kameyama Shumpei
Okamura Atsushi
Birch Stewart Kolasch & Birch, LLP.
Mitsubishi Denki & Kabushiki Kaisha
Ratcliffe Luke D.
Tarcza Thomas H.
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