Analysis of Integration Strategy and Orbit Determination Error System of Beidou GTVB

摘要

BDS ground test verification bed (GTVB) covers the three major levels of signal, information, and service of the BDS engineering project. It reproduces the interface and business relationship between the BDS space segment, the ground segment, and the user segment, verifies the main technical system, Simulate the operation management and service capabilities of the entire BDS. System integration and testing are organically combined at the physical level, signal level, and information level, enabling the system to work together, and comprehensively verifying and evaluating the system functions and performance, verifying whether the system meets the design requirements for the project, and providing a basis for project construction acceptance. This article introduces a cross-layer analysis method. This article introduces a cross-layer analysis method. It adopts the integration test principle of "cross-layer functional analysis, function and process integration, step-by-step implementation integration, and integration of integration and testing." and organically combines the various sub-systems through RF links and communication networks. And complete the integration and testing of the entire system incrementally. Taking BDS satellite orbit determination accuracy test as an example, the analysis of the relationship between the system index and the sub-system test index is helpful for the fault separation and identification. The results show that the system-to-subsystem fault location and identification effect is good.