Performance Evaluation of RF Systems on Rotorcrafts
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The Ohio State University / OhioLINK
2010
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=osu1274103965 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-osu12741039652021-08-03T05:59:30Z Performance Evaluation of RF Systems on Rotorcrafts Griffith, Khadir A. Electrical Engineering Rotor Blade Modulation RF Systems Hardware-in-the-Loop (HITL) Digital Communications RF systems onboard rotorcrafts are susceptible to a periodic variation in both the magnitude and phase of the received signals due to the rotation of the rotor blades. This is often referred to as rotor blade modulation (RBM). As its name indicates, RBM causes a modulation of the incident signal, which is dependent on the frequency and direction of the incident signal. As one might imagine, RBM has the potential to degrade a given RF system. Therefore, RBM must be accounted for when characterizing the performance of any RF system onboard a rotorcraft. The first part of this thesis develops methods for incorporating RBM in computer or hardware-in-the-loop (HITL) simulations of RF systems onboard rotorcrafts. The methods are verified using the response of an antenna mounted on a simple rotorcraft that is analyzed through numerical electromagnetic computations as well as characterized by measurements. In the second part of this thesis the effects of RBM on digital communication systems are discussed. It is demonstrated that one can mitigate the effects of RBM within the receiver using spatial diversity and simple equalization techniques. 2010-07-30 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1274103965 http://rave.ohiolink.edu/etdc/view?acc_num=osu1274103965 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Electrical Engineering Rotor Blade Modulation RF Systems Hardware-in-the-Loop (HITL) Digital Communications |
| spellingShingle |
Electrical Engineering Rotor Blade Modulation RF Systems Hardware-in-the-Loop (HITL) Digital Communications Griffith, Khadir A. Performance Evaluation of RF Systems on Rotorcrafts |
| author |
Griffith, Khadir A. |
| author_facet |
Griffith, Khadir A. |
| author_sort |
Griffith, Khadir A. |
| title |
Performance Evaluation of RF Systems on Rotorcrafts |
| title_short |
Performance Evaluation of RF Systems on Rotorcrafts |
| title_full |
Performance Evaluation of RF Systems on Rotorcrafts |
| title_fullStr |
Performance Evaluation of RF Systems on Rotorcrafts |
| title_full_unstemmed |
Performance Evaluation of RF Systems on Rotorcrafts |
| title_sort |
performance evaluation of rf systems on rotorcrafts |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
2010 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu1274103965 |
| work_keys_str_mv |
AT griffithkhadira performanceevaluationofrfsystemsonrotorcrafts |
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1719429023065440256 |