Product Details

Product Overview

The DAS-U250 Ultimate Edition Distributed Acoustic Sensing (DAS) system integrates years of proprietary R&D achievements, achieving comprehensive upgrades in system architecture, signal processing, algorithm optimization, and anti-interference capabilities. The system employs an ultra-coherent narrow-linewidth laser source and a high-speed, high-precision acquisition platform, coupled with proprietary fiber optic demodulation algorithms and an FPGA hardware acceleration platform. It is specifically engineered to meet the ultimate requirements for spatial resolution, sensitivity, and stability in extreme environments.

One of the core highlights is the breakthrough Coherence Fading and Polarization Fading noise suppression technology. Traditional DAS systems are susceptible to coherence fluctuations and polarization state perturbations in complex environments, leading to degraded signal-to-noise ratio (SNR) and increased false detection rates. This system significantly mitigates the impact of interference signals on the main channel through multi-channel phase fusion, adaptive polarization control, and time-window dynamic filtering techniques, achieving truly stable and high-fidelity acoustic signal reconstruction and ensuring reliable operation in long-distance, high-dynamic-range monitoring scenarios.

Regarding spatial precision, the system achieves a spatial resolution better than 5 meters, enabling high-density point monitoring along tens of kilometers of fiber optic cable paths and accurately capturing every minute disturbance. The system features a 250 MSPS high sampling rate, 4-channel synchronous acquisition capability, and supports 2-channel 500 MSPS DAC feedback for real-time data generation and simulation response. It is suitable for various application scenarios such as oil and gas pipeline monitoring, perimeter security, high-speed rail track monitoring, and structural health monitoring.