Combined differential demodulation schemes for satellite-based AIS with GMSK signals

Zhensheng Zhang; John Weinfield; Tarun Soni

doi:10.1117/12.848785

7 May 2010 Combined differential demodulation schemes for satellite-based AIS with GMSK signals

Zhensheng Zhang, John Weinfield, Tarun Soni

Proceedings Volume 7691, Space Missions and Technologies; 76910C (2010) https://doi.org/10.1117/12.848785
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

The paper presents a set of new demodulation algorithms for use in satellite systems to receive Automatic Identification System (AIS) signals, with the potential presence of other interfering signals. The combined differential demodulation scheme, referred to as CDD-n, combines n single differential demodulation schemes with appropriately selected weights. Simulation results indicate that the gain under the proposed demodulation scheme is up to 10 dB over several existing non-coherent, single differential demodulation schemes. The impact of the combination coefficients/weights, the number of single differential detectors used, the low pass filter used, the interference and phase shift on the performance are evaluated through simulation, respectively. The proposed demodulation schemes are simple and easy to implement in satellite receivers in current and future satellite networks.

Citation Download Citation

Zhensheng Zhang, John Weinfield, and Tarun Soni "Combined differential demodulation schemes for satellite-based AIS with GMSK signals", Proc. SPIE 7691, Space Missions and Technologies, 76910C (7 May 2010); https://doi.org/10.1117/12.848785

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available