1.8 m/0.5 s Resolution Coherent Doppler Wind Lidar Using Continuous Phase Modulation
نویسندگان
چکیده
A high-spatial-resolution coherent Doppler wind lidar (CDWL) with high modulation efficiency is reported. The pseudo-random phase coding (PRPC) links the spatial resolution to rate but suffers from non-rectangular transition caused by limited bandwidth. With help of continuous (CPM), abrupt switching between successive bit intervals avoided, thus significantly reducing bandwidth requirement. By mapping binary sequence into different states rather than levels, a 10-fold improvement realized. In experiments, performance proposed compared lidars in PRPC method and conventional non-coding method. Continuous radial profile measurement 800 m demonstrated temporal 1.8 0.5 s, which highest realized pulsed CDWL our best knowledge.
منابع مشابه
Coherent Doppler lidar for wind farm characterization
Coherent Doppler lidar measurements are of increasing interest for the wind energy industry. Wind measurements are fundamental inputs for the evaluation of potential energy yield and performance of wind farms. Three-dimensional scanning Doppler lidar may provide a new basis for wind farm site selection, design and optimization. In this paper, the authors discuss Doppler lidar measurements obtai...
متن کاملAn all-fiber image-reject homodyne coherent Doppler wind lidar.
In this paper, we present an alternative approach to the down-conversion (translation) of the received optical signals collected by the antenna of an all-fiber coherent Doppler lidar (CDL). The proposed method, widely known as image-reject, quadrature detection, or in-phase/quadrature-phase detection, utilizes the advances in fiber optic communications such that the received signal can be optic...
متن کاملWind Retrieval Algorithms for the Wind Products of the Airborne Coherent Doppler Lidar
The airborne coherent Doppler lidar could provide the wind velocity relative to the motion of the lidar. The retrieval algorithms are complex corresponding to Ground-based lidar, due to the Doppler shift caused by mobile platform. This article gives a thorough analysis of the wind retrieval algorithms for the wind products of airborne Doppler lidar, include the correction for the lidar velocity...
متن کاملComputer simulation of coherent Doppler lidar measurement of wind velocity and retrieval of turbulent wind statistics
C. Werner DLR Institute of Atmospheric Physics D-82234 Wessling, Germany E-mail: [email protected] Abstract. We describe the algorithms for the simulation of cw and pulsed coherent Doppler wind lidar operation in a turbulent atmosphere and the methods to estimate the mean wind and the parameters of small-scale wind turbulence from lidar data. The algorithms are realized as LabView compute...
متن کاملReduction of phase-induced intensity noise in a fiber-based coherent Doppler lidar using polarization control.
Optimization of signal-to-noise ratio is an important aspect in the design of optical heterodyne detection systems such as a coherent Doppler lidar (CDL). In a CDL, optimal performance is achieved when the noise in the detector signal is dominated by local oscillator shot-noise. Most modern CDL systems are built using rugged and cost-efficient fiber optic components. Unfortunately, leakage sign...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Photonics Journal
سال: 2022
ISSN: ['1943-0655', '1943-0647']
DOI: https://doi.org/10.1109/jphot.2022.3201025