资料介绍
A-GPS Overview v2A-GPS Overview / NX3 A-GPS Solution
Sep 2007 (v.2)
NS2020 - GPS Host Software - 12/05/2006
A-GPS Overview - Topics
A-GPS Overview
Background Why A-GPS What is included in Assistance Data Receiving Assistance Data
Nemerix NX3
Features Summary Why hosted A-GPS Support Typical configurations Platform Services Requirements
A-GPS Seminar NemeriX Proprietary & Confidential
Background
In order to obtain a location “fix” we need to know:
The time or distance between us and 4SVs The precise location of each SV
The information regarding SV orbits is transmitted by the SVs by modulating the CA code
Set of parameters (Ephemeris) that plug into equations defining the SV orbits
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