航空飞行试验新一代网络化遥测技术浅析

随着航空飞行试验技术的发展,对飞行试验遥测技术的需求日益增加。在综合试飞和多机协同试飞等需求的牵引下,伴随着无线通信网络技术的迅猛发展,航空飞行试验遥测技术正逐步从传统的"单向、点对点的遥测"向"双向、多点对多点的空地一体化遥测和遥控网络"模式转变。在此过程中,复杂无线信道环境下基于双向无线网络的遥测传输技术面临着多径传输、多普勒频移和时变等严峻挑战。首先介绍网络化航空飞行试验遥测技术的发展和现状;然后,重点分析国内外主流的飞行试验遥测技术发展状态,并在此基础上,剖析新一代航空飞行试验遥测技术的发展趋势、技术挑战和重点研究内容。

Analysis of next generation networking telemetry technology in aeronautical flight test

With the development of aeronautical flight test telemetry technology, the requirement for flight test telemetry becomes higher and higher. The integration flight test and multi fighter coordination flight test are urgent requirements for aeronautical flight test. At the same time, with the promotion of rapid development of wireless communication, telemetry transmission in aviation flight test develops gradually from the traditional "one way, point to point remote sensing" mode to "2 way, multipoint to multipoint integration of space telemetry and remote network" mode. In the new mode, bidirectional wireless based telemetry network faces the challenges of complex channels, i.e. multipath transmission, Doppler frequency shift and the time varying link quality. Given this, the progress and current status of telemetry technology in aeronautical flight test is introduced, and its technical challenges are discussed. We review the current research status and works. Finally, the trends, major research challenges and concerns are analyzed, which should be focused on wireless telemetry transmission in networking flight test telemetry.