Product Introduction:

Coherent wind lidars operate on the principle of optical heterodyne detection. They perform coherent beating between the atmospheric echo signals of transmitted laser beams and local oscillator laser light to derive the group velocity of atmospheric aerosols or molecules, enabling the measurement of atmospheric wind field data. Such lidars deliver high wind measurement accuracy and outstanding detection performance under clear-sky conditions.

Product Parameters:

I.Technical Parameters

II. Working Principle

The coherent Doppler wind lidar realizes atmospheric wind field detection based on the optical heterodyne detection principle. It mixes the Mie scattering echo signal light reflected by atmospheric aerosols with local oscillator laser to generate a beat frequency signal. By subtracting the preset offset from the frequency of the beat signal, the Doppler frequency shift generated by the movement of aerosol particles can be obtained, from which the atmospheric wind speed and wind direction can be inversely deduced.

In general, coherent wind lidars adopt the optical heterodyne detection technology: the atmospheric echo signal of transmitted laser light coherently beats with local oscillator laser to acquire the group velocity of atmospheric aerosols and molecules, so as to measure atmospheric wind field data. The system delivers high wind measurement accuracy and outstanding detection performance under clear-sky conditions.

III. Product Applications and Functional Characteristics

• Compact & Portable: Light weight and small overall volume for easy carrying, supporting flexible deployment to meet diverse measurement demands.
• Superior Measuring Precision: It achieves top-tier measurement accuracy compared with traditional mechanical wind sensors, with high-precision wind detection and powerful clear-sky detection capability.
• High Operational Reliability: Maintains stable performance under harsh outdoor measurement environments with strong environmental adaptability.

Product Advantages

1. Eye-Safe Laser Source: Equipped with a 1.55 μm eye-safe laser; under identical parameter settings, its safety level is over 10 times higher than that of 2 μm lidars.
2. High Spatiotemporal Resolution: Rapidly and continuously acquires airborne wind field data varying with distance, altitude and time. It features excellent temporal resolution, spatial resolution and high measurement accuracy with dense data output, which can provide high spatiotemporal resolution atmospheric wind field data for meteorological support.
3. Intelligent Hazard Weather Identification: Automatically recognizes typical hazardous weather such as downbursts and low-level jets based on wind field data. It outputs analysis results at user-defined time intervals (10s, 30s, 1min, 2min, 5min, etc.) and supports alarm notification. It maintains efficient detection under clear sky, with a maximum detection range of 3 km.

Product Applications:

• Operational meteorological observation
• Atmospheric wind field research
• Ecological environment monitoring
• Airport wind shear detection
• Marine atmospheric observation