Modulating Retro-Reflector Lasercom Systems for Small Unmanned Vehicles

Lasercom, also known as free space optical (FSO) communication, has enjoyed a renewal of interest driven by increasing data rate requirements and the crowding of the RF spectrum, affecting both commercial and military sectors. Military communications must also deal with intentional or unintentional jamming, as well as frequency allocation restrictions, neither of which affects lasercom. The U.S. Naval Research Laboratory (NRL) has been conducting research on lasercom since 1998 with an emphasis on tactical applications. NRL's lasercom research has covered propagation studies in the maritime domain, component development, and systems demonstrations. NRL has developed both conventional lasercom systems and retro-reflecting systems for small platforms. This paper reviews some of the retro-reflecting work, discusses applications of lasercom in the areas of explosive ordnance disposal (EOD) unmanned ground vehicles (UGVs), and unmanned aerial vehicles (UAVs), and describes future directions.

[1]  Christopher I. Moore,et al.  45 Mbps cat's eye modulating retro-reflector link over 7 Km , 2006, SPIE Optics + Photonics.

[2]  G. C. Gilbreath,et al.  45-Mbit/s cat’s-eye modulating retroreflectors , 2007 .

[3]  R. Mahon,et al.  High speed lasercomm data transfer in Seahawk 2007 exercise , 2008, SPIE Defense + Commercial Sensing.

[4]  J. Jaremko,et al.  Lasercomm demonstration during US navy trident warrior 06 forcenet exercise , 2007, 2007 IEEE Antennas and Propagation Society International Symposium.

[5]  Michael J. Vilcheck,et al.  Modulating retroreflector architecture using multiple quantum wells for free-space optical communications , 1998, Other Conferences.

[6]  Robert Q. Fugate,et al.  Low-power FLC-based retromodulator communications system , 1997, Photonics West.

[7]  Hamid Hemmati.  Optical systems for free-space laser communications , 2003, SPIE Optics + Photonics.

[8]  Eric Saint Georges.  Evaluation of cone tracking for free-space optical communication with a retro-modulator , 2007 .

[9]  C. Murphy,et al.  Detection of eyeshine by flashlight fishes of the family anomalopidae , 1992, Vision Research.

[10]  Maha Achour.  Free-space optical communication by retromodulation: concept, technologies, and challenges , 2004, SPIE Security + Defence.

[11]  Eric Saint Georges,et al.  Free-space optical communication beam acquisition and tracking optimization with 8-segments PSD and small spot size , 2007, SPIE Optical Engineering + Applications.

[12]  J. B. Ross,et al.  Coherent CO(2) laser communication system with modulable retroreflectors. , 1995, Applied optics.

[13]  Christopher I. Moore,et al.  MIO TAR 2 HOST LASERCOMM EXPERIMENT IN TRIDENT WARRIOR 08 , 2008 .

[14]  W.S. Rabinovich,et al.  Infrared data link using a multiple quantum well modulating retro-reflector on a small rotary-wing UAV , 2000, 2000 IEEE Aerospace Conference. Proceedings (Cat. No.00TH8484).

[15]  G. C. Gilbreath,et al.  Free space optical communications research at the U.S. Naval Research Laboratory , 2010, LASE.

[16]  W. S. Rabinovich,et al.  Asymmetric Lasercom for Small Unmanned Aerial Systems , 2011 .

[17]  L. Swingen,et al.  Practical considerations of retroreflector choice in modulating retroreflector systems , 2005, Digest of the LEOS Summer Topical Meetings, 2005..

[18]  William S. Rabinovich,et al.  Design and analysis of a diffraction-limited cat’s-eye retroreflector , 2002 .

[19]  Stuart D. Milner,et al.  Flexible optical wireless links and networks , 2003, IEEE Commun. Mag..

[20]  Brian Gaughan,et al.  Long range field testing of free space optical communications terminals on mobile platforms , 2009, MILCOM 2009 - 2009 IEEE Military Communications Conference.

[21]  Eric J. Korevaar,et al.  Understanding the performance of free-space optics [Invited] , 2003 .

[22]  Leslie Charles Laycock,et al.  Feasibility of retroreflective free-space optical communication using retroreflectors with very wide field of view , 2004, SPIE Security + Defence.

[23]  Rita Mahon,et al.  Free-space optical data link to a small robot using modulating retroreflectors , 2009, Optical Engineering + Applications.

[24]  Christopher I. Moore,et al.  Free-space optical communications link at 1550 nm using multiple-quantum-well modulating retroreflectors in a marine environment , 2005 .

[25]  Michael J. Vilcheck,et al.  InGaAs multiple quantum well modulating retro-reflector for free-space optical communications , 2002, SPIE Optics + Photonics.

[26]  Christopher I. Moore,et al.  Free-space optical communication link across 16 kilometers over the Chesapeake Bay to a modulated retroreflector array , 2008 .