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Practical Results of Hybrid AOA/TDOA Geolocation Estimation in CDMA Wireless Networks

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Executive Summary

This paper describes a hybrid AOA/TODA Mobile Station (MS) location estimation method based on the CDMA wireless communications signals. The method utilized estimates the Angle Of Arrival (AOA) and Time Difference Of Arrival (TDOA) of downlink pilot channel. In this paper, signal parameter estimations including AOA and TDOA, and position estimation challenges in real wireless communications systems are denoted. For position estimation, the mathematical model and its linearized model for a hybrid TDOA/AOA method based on the Taylor series expansion are derived.

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