Abstract:In the new aircraft flight test mission, telemetry monitoring technology is an important means to ensure flight test safety and improve flight test efficiency. Aiming at the challenges and problems of terrestrial real-time monitoring technology, some advanced monitoring technology such as multi-type alarm technology based on fault tree, embedded quasi-real-time data processing technology and emergency treatment auxiliary decision technology are proposed. The flight safety decision library concept is introduced and the emergency treatment auxiliary decision mechanism is established to achieve the aircraft system test flight status monitoring and integrated fault alarm, complex flight test subjects quasi real-time calculation and evaluation and emergency response decision support. The results of the actual flight test show that the integrated monitoring system developed by this technology can make the test flight commander and engineers get the test aircraft fault alarm, the evaluation results of test flight subjects and the emergency decision-making plan in the first time, which greatly improves the test flight efficiency and safety.