Applications of smart antennas to rotorcrafts.
Transmitted and received signals involving rotorcrafts are subject to intermodulations caused by the rotor blades. In this paper, the statistical characteristics of the wireless communication link between a rotorcraft transmitter and a receiver on the ground are developed. Both the scattering and Do...
| Main Authors: | , , , |
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| Format: | |
| Language: | English |
| Published: |
2002
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| Online Access: | http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173156 |
| Summary: | Transmitted and received signals involving rotorcrafts are subject to
intermodulations caused by the rotor blades. In this paper, the statistical
characteristics of the wireless communication link between a rotorcraft
transmitter and a receiver on the ground are developed. Both the scattering
and Doppler effects of the rotating blades on the impairment of frequency
modulated frequency hopping signals are considered. The channel model
includes the near-field wave propagation between the transmitter antenna
and the scattering blades. The channel model is used to examine the
performance of different diversity techniques, namely, the transmitter
diversity, multicarrier frequency hopping, and the fast frequency hopping,
in view of antenna polarization and relative strength of the direct path and
the scattering component from the rotating blades. |
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