Simplifying the Performance Analysis of the SPRT for GPS Acquisition-Reference-Cited by-同舟云学术

Simplifying the Performance Analysis of the SPRT for GPS Acquisition

Published:2011-04-18 Issue: Volume:2011 Page:1-15
ISSN:1687-5990
Container-title:International Journal of Navigation and Observation
language:en
Short-container-title:International Journal of Navigation and Observation

Author:

O'Mahony Niamh¹,Lachapelle Gérard²,Murphy Colin C.¹

Affiliation:

1. Department of Electrical and Electronic Engineering, University College Cork, College Rd., Cork, Ireland

2. PLAN Group, Departement of Geomatics Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada T2N 1N4

Abstract

A new approximation for the distribution of the probability ratio in a sequential probability ratio test (SPRT) using noncoherent integration across a full code period is presented. The new approximation is valid for the carrier-to-noise power ratios (C/N0) typically encountered in GPS acquisition (20 dB-Hz ≤ C/N0 ≤ 50 dB-Hz), and it allows accurate theoretical performance analysis of the SPRT to be carried out for signals in this C/N0 range, eliminating the need for lengthy simulations for each scenario under investigation. Thus, the SPRT performance can be readily compared to that of other acquisition strategies for receiver design. Previous approximations in the literature are not valid in the range 20 dB-Hz ≤ C/N0 ≤ 50 dB-Hz.

Publisher

Hindawi Limited

Subject

General Earth and Planetary Sciences,General Engineering,Instrumentation

Link

http://downloads.hindawi.com/archive/2011/946319.pdf

Reference19 articles.

1. Sequence acquisition of DS-CDMA systems employing Gold sequences

2. Noncoherent sequential acquisition of PN sequences for DS/SS communications with/without channel fading

3. Multiple Dwell Serial Search: Performance and Application to Direct Sequence Code Acquisition