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True Wireless Communications In Underground Environments and Other Non-Line-of Sight Applications

Award Information
Agency: Department of Defense
Branch: Army
Contract: W15P7T-05-C-K203
Agency Tracking Number: A043-135-0843
Amount: $69,994.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: A04-135
Solicitation Number: 2004.3
Solicitation Year: 2004
Award Year: 2005
Award Start Date (Proposal Award Date): 2004-12-13
Award End Date (Contract End Date): 2005-06-13
Small Business Information
6300 Gateway Dr.
Cypress, CA 90630
United States
DUNS: 614108918
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Denis Reidy
 Principal Investigator
 (714) 224-4410
Business Contact
 Parviz Parhami
Title: Chief Executive Officer
Phone: (714) 224-4410
Research Institution

In previous modeling of the effect of soil properties on radio-frequency (RF) electromagnetic communications, SARA, Inc. has shown a drop-off of electric-field strength versus distance through the ground at a nearly billion-fold reduction. Even average ground properties shield the electromagnetic source so thoroughly that there is little hope of using a wireless RF communications network sensitive enough to be able to communicate from and into buried structures, as the attenuation of electromagnetic fields underground is simply too great to consider their utility for wireless communications. What is required is a wireless method of communication that can effectively and consistently communicate to and from underground structures through hundreds of feet of earth, rock and even concrete. SARA, Inc. proposes here that magnetic-based communications appears practical for wireless communications in the challenging environments under consideration. SARA, Inc. has developed a way to effectively and consistently sense signals to and from underground structures using a magnetic source of reasonable power to penetrate a barrier with the ability to recognize the broadcast magnetic signal in the presence of background electromagnetic noise. As far as the magnetic transmitter is concerned, the existence of the soil is almost completely transparent to its ability to communicate to above ground sites. Furthermore, the attenuation of the magnetic source. These previous and ongoing efforts have validated the abilities of magnetic fields as new communication devices through the ground to desired ranges where standard RF communications fail.

* Information listed above is at the time of submission. *

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