Applications of Smart Antennas to Rotorcrafts

✍ Scribed by Moeness Amin; Yimin Zhang; Vincent Mancuso; Ahmad Hoorfar

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 291 KB
• Volume: 12
• Category: Article
• ISSN: 1051-2004
• DOI: 10.1006/dspr.2002.0446

✦ Synopsis

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.  2002 Elsevier Science (USA)