Engineering telemetry continuously records the whole operating status of satellite. Unlike telemetry transmitted through the telemetry, tracking, and command (TT&C) channels, it is not constrained by ground-station visibility arcs and therefore provides an uninterrupted view of satellite behavior, which makes it of great value for in-orbit operation and maintenance. However, as the number of satellites keeps growing, the data formats and analysis requirements of engineering telemetry have become increasingly heterogeneous. Existing analysis tools are mostly model-specific and lack generality, and no mature software yet supports the comparative evaluation of engineering telemetry against multi-channel TT&C telemetry. To address these problems, this paper presents a deep analysis and efficient evaluation software for satellite engineering telemetry. Three key technologies are developed: source-code-level deep analysis of engineering telemetry data, multi-source multi-channel efficient evaluation, and universal satellite-parameterized indexing and parsing. The software fills the gap of a general-purpose engineering-telemetry analysis and evaluation tool and has been applied to over ten in-test satellites and four on-orbit satellites. Application results show that the software reduces the telemetry interpretation time from approximately one hour to ten minutes per person, an efficiency gain of six, while achieving an analysis accuracy of 100%. It thus provides satellite designers with an effective tool that improves the efficiency, accuracy, and standardization of telemetry interpretation and helps ensure the stable operation of satellites.

engineering telemetry,multi-channel TT&C telemetry,deep analysis,efficient evaluation,model universality