High-resolution signal-in-space measurements of VHF omnidirectional ranges using UAS
<p>In this paper, we describe measurement results of the signal-in-space of very high frequency (VHF) omnidirectional range (VOR) facilities. In aviation VOR are used to display the current course of the aircraft in the cockpit. To understand the influence of wind turbines (WT) on the signal i...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
2019-09-01
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| Series: | Advances in Radio Science |
| Online Access: | https://www.adv-radio-sci.net/17/1/2019/ars-17-1-2019.pdf |
| Summary: | <p>In this paper, we describe measurement results of the
signal-in-space of very high frequency (VHF) omnidirectional range (VOR)
facilities. In aviation VOR are used to display the current course of the
aircraft in the cockpit. To understand the influence of wind turbines (WT)
on the signal integrity of terrestrial navigation and radar signals, the
signal content and its changes, respectively, must be investigated. So far,
only numerical simulations have been carried out on the frequency-modulation
(FM) part of the Doppler-VOR (DVOR) signal to estimate the influence of WT
on DVOR. Up to now, the amplitude-modulated (AM) part of the DVOR was not
assessed at all. In 2016, we presented an unmanned aerial system (UAS) as a
carrier for state-of-the-art radio-frequency (RF) measurement
instrumentation (Schrader et al., 2016a, c; Bredemeyer et al., 2016), to measure and to record the true signal-in-space
(both FM and AM signal) during the flight. The signal-in-space (which refers
to time-resolved signal content and field strength, respectively) is
measured and sampled without loss of information and, furthermore,
synchronously stored with time stamp and with precise position in space,
where the measurements were taken.</p> |
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| ISSN: | 1684-9965 1684-9973 |