Stand-off Distances for Non-Line-of-Sight Maritime Mobile Applications in 5 GHz Band

Non-line-of-sight (NLoS) maritime mobile radio channel in 5GHz band is experimentally investigated in this paper through wideband channel soundings. During the measurements, the transmitter was installed onboard a speed boat, while the receiver was placed on the roof top of a building on shore. Difierent types of cargo ships anchored ofi the east coast of Singapore were examined as obstructions for the NLoS propagations. Besides power delay proflle (PDP), stand-ofi distance is introduced in this work to analyze the NLoS propagations associated with three difierent types of cargo ships. The measured PDPs and stand-ofi distances are found to be comparable qualitatively with the simulated results using 3-D ray tracing. The reported information is found to be useful for military applications such as unmanned surface vehicles (USVs) in maritime environments or surveillance.

[1]  Ian J. Timmins,et al.  Marine Communications Channel Modeling Using the Finite-Difference Time Domain Method , 2009, IEEE Transactions on Vehicular Technology.

[2]  Boon Chong Ng,et al.  The Effects of Tropical Weather on Radio-Wave Propagation Over Foliage Channel , 2009, IEEE Transactions on Vehicular Technology.

[3]  David W. Matolak,et al.  The 5-GHz Airport Surface Area Channel—Part II: Measurement and Modeling Results for Small Airports , 2008, IEEE Transactions on Vehicular Technology.

[4]  David W. Matolak,et al.  The 5-GHz Airport Surface Area Channel—Part I: Measurement and Modeling Results for Large Airports , 2008, IEEE Transactions on Vehicular Technology.

[5]  J. D. Parsons,et al.  The Mobile Radio Propagation Channel , 1991 .

[6]  L. R. Hitney,et al.  Frequency diversity effects of evaporation duct propagation , 1990 .

[7]  M. Hester,et al.  Reference manual to mitigate potential terrorist attacks against buildings , 2003 .

[8]  M. Rice,et al.  Multipath Channel Model for Over-Water Aeronautical Telemetry , 2009, IEEE Transactions on Aerospace and Electronic Systems.

[9]  Theodore S. Rappaport,et al.  Measurements and models for radio path loss and penetration loss in and around homes and trees at 5.85 GHz , 1998, IEEE Trans. Commun..

[10]  Yee Hui Lee,et al.  Non-line-of-sight communication links over sea surface at 5.5GHz , 2011, Asia-Pacific Microwave Conference 2011.

[11]  Yee Hui Lee,et al.  Experiment results of a two-by-two diverse antenna system over sea surface in NLOS scenario , 2012, Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.

[12]  Henry L. Bertoni,et al.  Radio Propagation for Modern Wireless Systems , 1999 .

[13]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[14]  P. Constantinou,et al.  Measuring and modeling the wideband mobile channel for above the sea propagation paths , 2006, 2006 First European Conference on Antennas and Propagation.

[15]  Yee Hui Lee,et al.  Practical wideband channel sounding system for air-to-ground measurements at C Band , 2009, 2009 IEEE Instrumentation and Measurement Technology Conference.

[16]  Masayuki Fujise,et al.  Path Loss Measurements in Sea Port for WiMAX , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[17]  Yee Hui Lee,et al.  Empirical modeling of ducting effects on a mobile microwave link over a sea surface , 2012 .

[18]  Zhou Zhou,et al.  A Synchronous Wideband Frequency-Domain Method for Long-Distance Channel Measurement , 2013 .

[19]  T. Inoue,et al.  Propagation characteristics on line-of-sight over-sea paths in Japan , 1974 .

[20]  Yee Hui Lee,et al.  FURTHER STUDY OF RAINFALL EFFECT ON VHF FORESTED RADIO-WAVE PROPAGATION WITH FOUR- LAYERED MODEL , 2009 .

[21]  Nidhin Davis.  Comparison of Ray Tracing and Measurement Results for 5GHz Band Wireless Channels , 2009 .

[22]  Yee Hui Lee,et al.  Measurements and Characterizations of Air-to-Ground Channel Over Sea Surface at C-Band With Low Airborne Altitudes , 2011, IEEE Transactions on Vehicular Technology.

[23]  Kun Yang,et al.  Long-Distance Propagation Measurements of Mobile Radio Channel over Sea at 2 GHz , 2011, 2011 IEEE Vehicular Technology Conference (VTC Fall).