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Covert Underwater Communications

Award Information

Agency:
Department of Defense 		Branch:
Navy 		Award ID:
36004 		Program Year/Program:
1997 / SBIR
Agency Tracking Number:
36004 		Solicitation Year:
N/A 		Solicitation Topic Code:
N/A 		Solicitation Number:
N/A
Small Business Information
PLANNING SYSTEMS, INC.
12030 Sunrise Valley Drive Suite 400, Reston Plaza Reston, VA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1997
Title: Covert Underwater Communications
Agency / Branch: DOD / NAVY
Contract: N/A
Award Amount: $68,525.00
 

Abstract:

To evaluate the feasibility of using the VLF acoustic channel to achieve covert point to point communication Planning Systems Incorporated (PSI) uses a broadband Finite Element Parabolic Equation (FEPE) underwater acoustic propagation model. The model generates VLF channel transfer functions used to develop Equivalent Discrete-Time (EDT) filters. The EDT filters characterize not only the channel, but also the transmitter and receiver responses. The EDTs model the intersymbol interference (ISI) that occurs in digital communications over band-limited channels. They are used to simulate ISI effects arising from the transmission of phase shift keying (PSK) and quadrature amplitude modulation (QAM) symbol sequences over the VLF channel and to design ideal compensation techniques for the interference. The Phase I goal is to develop the design data required to develop real-time adaptive VLF channel characterization algorithms in Phase II. Among the issues to be addressed are: the definition of the channel stability; the maximum number of symbols that can be transmitted and still achieve reliable communication; and the maximum communications range that can be achieved.

Principal Investigator:

James F. Forren
7037343424

Business Contact:

Small Business Information at Submission:

Planning Systems, Inc.
7923 Jones Branch Dr. Mclean, VA 22102

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No