Fast single-element PN acquisition for the TDRSS MA system

Lee D. Davisson, Paul G Flikkema

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A description is given and a performance analysis presented of a novel pseudonoise (PN) code acquisition approach for the tracking and data relay satellite system (TDRSS) multiaccess (MA) return subsystem. The MA subsystem uses a phased array onboard the TDRS with 30 elements whose received signals are each independently retransmitted to the ground for beam forming. In the current operational system, acquisition is performed by using a serial search of the possible PN epochs on the beam-formed 30-element signal. The approach performs acquisition on a single (arbitrary) element signal using a parallel (i.e., simultaneous) search of all possible PN epochs. Since only one element signal is used, no beam forming is required prior to PN acquisition. The approach is based on sampling and digital processing of the received signal and incorporates techniques which counteract the effects of Doppler and asynchronous data modulation. The probability of correct acquisition as a function of acquisition time, signal-to-noise ratio, data rate, and user satellite Doppler is analyzed.

Original languageEnglish (US)
Pages (from-to)1226-1235
Number of pages10
JournalIEEE Transactions on Communications
Volume36
Issue number11
StatePublished - Nov 1988
Externally publishedYes

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Satellite relay systems
Digital signal processing
Signal to noise ratio
Modulation
Satellites
Sampling

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Fast single-element PN acquisition for the TDRSS MA system. / Davisson, Lee D.; Flikkema, Paul G.

In: IEEE Transactions on Communications, Vol. 36, No. 11, 11.1988, p. 1226-1235.

Research output: Contribution to journalArticle

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