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Submarine UHF SATCOM (25 kHz CPM) Narrowband Interference and Multipath…

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
82761
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
N071-103-0660
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Adaptive Dynamics, Inc
15373 Innovation Dr. #115 San Diego, CA -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2007
Title: Submarine UHF SATCOM (25 kHz CPM) Narrowband Interference and Multipath Mitigation with Nonlinear Adaptive Filtering
Agency / Branch: DOD / NAVY
Contract: N00039-07-C-0135
Award Amount: $69,980.00
 

Abstract:

We propose to develop innovative nonlinear adaptive filtering techniques to simultaneously mitigate the effects of narrowband interference and multipath distortion for the 25 KHz Continuous Phase Modulation (CPM) MIL-STD-188-181B waveform for submarine communications and other DoD applications. Our approach is based on an extension of nonlinear adaptive filtering techniques that we developed and successfully applied to the 5KHz Shaped Offset Quadrature Phase Shift Keyed (SOQPSK) MIL-STD-188-181B waveform in previous work. These algorithms will be redesigned to provide effective performance with the 25 KHz CPM waveform in the presence of both CW interference and multipath distortion. In Phase I, we will provide a complete software receiver capable of signal acquisition and subsequent tracking of frequency, phase, timing, and the Reed-Solomon coding and Viterbi detection functions specified in MIL-STD-188-181B. The filters developed will be robust to the high levels of interference frequently encountered in tactical networks, and will solve the tactical requirement of interference mitigation with minimal signal distortion by the development of a multi-stage nonlinear adaptive filtering approach that is able to recognize the start of the preamble and acquire and track the 25 KHz coded CPM waveform in the presence of severe CW narrowband interference.

Principal Investigator:

Brandon Zeidler
Chief Technology Officer
8587052781
brandonzeidler@sbcglobal.net

Business Contact:

James Zeidler
President
8585665627
jrz@san.rr.com
Small Business Information at Submission:

ADAPTIVE DYNAMICS, INC.
11829 La Colina Rd. San Diego, CA 92131

EIN/Tax ID: 200062437
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No