Overall Non-Mechanical Spectrally Steered LiDAR Using Chirped Amplitude-Modulated Phase-Shift Method

We propose and demonstrate an overall non-mechanical spectrally steered laser rangefinder using the dispersion-tuned swept (DTSL) a passive diffractive element. The DTSL has no mechanical moving parts, making it possible to achieve inertial-free high wavelength sweeping speed. inherent intensity-modulation characteristic of allows modulation phase-shift method be applied, similar that used for amplitude-modulated continuous-wave (AMCW) rangefinder. Since pulse repetition rate is chirped, standard signal processing techniques AMCW are not applicable. In this paper, we novel chirped (CAMPS) with technique obtain information from signal. As proof concept, demonstrated CAMPS LiDAR axial ranging resolution ~50 m at scanning speed 10 kHz.