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COHERENT LIDAR SYSTEM USING TUNABLE CARRIER-SUPPRESSED SINGLE-SIDEBAND MODULATION
COHERENT LIDAR SYSTEM USING TUNABLE CARRIER-SUPPRESSED SINGLE-SIDEBAND MODULATION
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机译:使用可调谐载波抑制单边调制的相干激光雷达系统
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摘要
We disclose a lidar system that includes a modulator-based probe-light generator and a coherent optical receiver. The probe-light generator uses tunable carrier-suppressed single-sideband modulation to generate frequency-chirped optical pulses for the optical-probe beam directed at the target. The coherent optical receiver uses a homodyne detection scheme in which a split portion of the optical-probe beam is used as an optical local oscillator signal for detecting a corresponding optical beam reflected by the target. The resulting electrical RF signals generated by the receiver can be processed, e.g., using a disclosed signal-processing method, to determine one or both of the distance to the target and the velocity of the target.
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