Date Added: Dec 2010
This paper proposes a joint acquisition strategy of Global Navigation Satellite Systems (GNSS) satellites to reduce the number of correlations required in the acquisition process. The proposed method generates a local satellite signal replica, which contains the sum of two or more satellite codes, and performs a grid search with this augmented local replica. The grid is then analyzed with a test statistic function, resulting in a delay/Doppler grid with as many maxima as satellites present in the local replica. Then, maxima are identified using an extra correlation per possible satellite.