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The Design and Implementation of an Ultrawideband Digital Backend Visualization Control System Based on gRPC
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The Design and Implementation of an Ultrawideband Digital Backend Visualization Control System Based on gRPC
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Journal Article
The Design and Implementation of an Ultrawideband Digital Backend Visualization Control System Based on gRPC
2026
Overview
With the continuous increase in the observational bandwidth of radio telescopes, digital backend are facing new challenges in real-time control, heterogeneous resource management, and system stability. To address the requirements of ultrawideband radio observations for low latency, high concurrency, and visualization capabilities, this paper presents the design and implementation of an ultrawideband digital backend visualization control system tailored for heterogeneous distributed environments. The system adopts a layered and decoupled architecture to centrally manage FPGA front-end devices, GPU computing nodes, and general-purpose computing resources, while containerization technologies are employed to enable standardized deployment of data processing tasks. At the communication layer, a gRPC framework based on HTTP/2 and Protocol Buffers is introduced to reduce the serialization and transmission overhead of monitoring data and control signals. Through comparative experiments on end-to-end latency and high-concurrency throughput, the performance characteristics of gRPC and traditional REST interfaces are quantitatively evaluated under varying payload sizes and concurrency levels. The proposed system has been deployed in the C-band (4468–7796 MHz) receiver system of the Nanshan 26 m Radio Telescope and validated through practical observations in pulsar timing, pulsar searching, and baseband observation modes. Experimental results demonstrate that the system operates stably under real ultra-wideband observing conditions, supports multi-sub-band data processing and real-time visualization monitoring, and provides an effective engineering reference for the implementation of ultrawideband radio telescope digital backend systems.
Publisher
IOP Publishing
Subject
