An Investigation of the Adaptive Temporal Selective Attenuator

Ilir F. Progri, Gene Bogdanov and Vikram C. Ramanna

Abstract:	An adaptive temporal selective attenuator (ATSA) can be used to suppress the effects of undesired narrowband signals. The ATSA can be modeled as a discrete finite impulse response (DFIR) filter where the filter's impulse response coefficients can be selected from the minimization of the undesired over desired ratio (UDR). The UDR ratio, which represents directly the ATSA's performance, depends on the filter’s size, the temporal delay, sampling frequency, and desired signal frequency. A methodology for properly selecting the temporal delay and the sampling frequency for a given filter’s size and desired signal frequency is analyzed and simulated. The analysis and simulation results are validated using an implementation of the ATSA on the TI's C6711 digital signal processor (DSP). Some of the lessons learned during this investigation could be particularly valuable for ATSAs or analogous systems that will operate on the L5 frequency.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	1952 - 1978
Cite this article:	Progri, Ilir F., Bogdanov, Gene, Ramanna, Vikram C., "An Investigation of the Adaptive Temporal Selective Attenuator," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 1952-1978.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In