Range resolved lidar for long distance ranging with sub-millimeter resolution.
نویسندگان
چکیده
A lidar technique employing temporally stretched, frequency chirped pulses from a 20 MHz mode locked laser is presented. Sub-millimeter resolution at a target range of 10.1 km (in fiber) is observed. A pulse tagging scheme based on phase modulation is demonstrated for range resolved measurements. A carrier to noise ratio of 30 dB is observed at an unambiguous target distance of 30 meters in fiber.
منابع مشابه
Simultaneous ranging and velocimetry of fast moving targets using oppositely chirped pulses from a mode-locked laser.
A lidar system based on the coherent detection of oppositely chirped pulses generated using a 20 MHz mode locked laser and chirped fiber Bragg gratings is presented. Sub millimeter resolution ranging is performed with > 25 dB signal to noise ratio. Simultaneous, range and Doppler velocity measurements are experimentally demonstrated using a target moving at > 330 km/h inside the laboratory.
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ورودعنوان ژورنال:
- Optics express
دوره 18 7 شماره
صفحات -
تاریخ انتشار 2010