In the aerospace test, Signal source is the core component. It provides various signals what are needed by test. However signal transmission’s reflections and noise always cause interference. It will impact the accuracy of signal. Therefore, the precision, stability and reliability of signal source in space telemetry experiment are very important. This paper adopts FPGA + AD768 to achieve a precision, stability signal source. By the assessment test, this system is proved to be feasible and stable.

In the telemetry system of aviation, the reliability and stability of the power supply equipment directly influences the performance of the system. Based on XC2S100 and MAX153, this paper designs a reliability and stability power supply and voltage remote real-time monitor platform ,at the same time ,because of the power supply equipment only working continued which is a waste for the telemetry system, this paper put forward a the optimization schemes.

To match, test, and determine the working conditions and correctness of each function of the aircraft measurement system. This article proposes a design of equivalent test platform which can produce digital and analog signals for the self-testing of measurement system. By using the ethernet protocol chip W5300 to achieve the high-speed communication between host computer and equivalent device. Communication uses UDP unicast data transfer mode with advantages of high-speed and long-distance transmission, and the Phenomenon of data packet loss is not easy in transmission.