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DAS-U250 Ultimate Edition Demodulation Card
DAS-U250 Ultimate Edition Demodulation Card
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.
Features:
Supports multiple user-defined expansion IO
FPGA-open high-speed data acquisition card
FPGA supports user-defined logic development
PCIe x8 Gen3 data transfer interface with a continuous transfer rate of 8GB/s
Customer Value:
250 MSPS high sampling rate
4-channel synchronous acquisition
2-channel synchronous output
High-speed 16-bit
acquisition card with on-board
FPGA
real-time signal processing
capability
Supports DC offset control, improving acquisition accuracy for unipolar and bipolar high-frequency pulse signals
Real-time transmission of acquired data via a fast PCIe
bus, with
DMA
timed upload function specifically optimized for scanning
systems
Flexible configuration options
Large-capacity on-board memory
Reduces development time, accelerates time-to-market
Customizable advanced triggering functions
Can integrate real-time signal processing modules suitable for OEM
applications: such as accumulation, peak detection,
DDC,
and
FFT,
etc.
Application Fields:
Radar acquisition systems; LiDAR systems; Fiber optic sensing systems; Photomultiplier tube acquisition systems; Scanning acquisition systems; Lightning location systems; Other related fields…
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Release Date: 2026-02-28
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