A coherent random modulation LiDAR based on phase-coded subcarrier modulation is proposed to mitigate the impact of Doppler-frequency-shift (DFS) from the pseudo-random (PR) pattern. DFS is firstly obtained from the beat signal of the reflected optical carrier and the local optical signal. Then digital DFS compensation is used to mitigate the impact of the DFS from the PR-coded subcarrier. In the demonstration experiment, a 1.25-GHz RF signal is used as the subcarrier which is phase-coded with a 500-Mbit/s M-sequence. The DFS is simulated by an acousto-optic modulator (AOM). The length of fiber is measured, which demonstrate the feasibility of the proposed DFS mitigation method.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.