电讯技术2017，Vol.57Issue(12)：1404-1407,4.DOI:10.3969/j.issn.1001-893x.2017.12.010
通过试飞测量大型直升机超短波天线的方向图
Determination of Large-scale Helicopter-borne V/UHF Antenna Radiation Patterns by Flight Test
摘要
Abstract
The accurate measurements of V/UHF antenna radiation patterns ( ARP ) is very important for testing the performance of airborne communication systems and guiding its operation. As the traditional test methods are not suitable for a large-scale helicopter, through the analysis of its flight characteristics, a new method of ARP measurement suitable for large-scale helicopters is proposed. Limit values of the flight parameters including altitude, velocity and attitude are given through calculation. The detailed process is also provided. By acquiring the calibration data of all test frequencies in each flight and completing the cal-ibration curve fitting, high precision is guaranteed. The method has been applied in the flight test of a large-scale helicopter and the results show that the standard deviation between this method and the tradi-tional method is within 1. 6 dB, and the flight test efficiency is improved by 66%.关键词
大型直升机/超短波天线/方向图测量/飞行试验Key words
large-scale helicopter/W/UHF antenna/antenna radiation pattern(ARP) measurement/flight test分类
信息技术与安全科学引用本文复制引用
汤恒仁..通过试飞测量大型直升机超短波天线的方向图[J].电讯技术,2017,57(12):1404-1407,4.
