ترجمه مقاله نقش ضروری ارتباطات 6G با چشم انداز صنعت 4.0
- مبلغ: ۸۶,۰۰۰ تومان
ترجمه مقاله پایداری توسعه شهری، تعدیل ساختار صنعتی و کارایی کاربری زمین
- مبلغ: ۹۱,۰۰۰ تومان
An unmanned aerial system (UAS)-based measurement process to supplement conventional flight inspection of terrestrial navigation aids is described. In contrast to typical flight inspection with an aircraft, the platform allows quasistationary hovering in critical areas with extended observation times, without using expensive manned helicopters to carry measurement equipment and antennas.
A microcopter carries the payload which consists of a short linear antenna and a highly miniaturized, FPGA-based large bandwidth receiving/recording system. In contrast to conventional methods, the raw band pass signal-in-space covering the complete channel bandwidth is sampled at a high data rate, and is directly recorded without any preprocessing whatsoever. This preserves maximum opportunities for any signal post-processing to extract all essential parameters of interest. Among typical flight guidance parameters such as DDM, the nature of scatterers can be shown in the time and frequency domains. All data is synchronized in time with the flight vector gained from an advanced on-board position system.
The paper describes experiences gained with the system, and provides first measurement results obtained from ILS localizer and VOR facilities.