Patent ID: 7397422
Filing Date: 2008-07-08
Classification: G01S

Abstract:
1. A method for determining the attitude of a platform, comprising: (a) searching and scanning for at least one GPS/GNSS satellite to determine initial platform position; wherein a single directionally steered antenna scans for the at least GPS/GNSS satellite; (b) pointing and scanning the single directionally steered antenna to the at least one GPS/GNSS satellite to determine a first angular measurement of a direction of a GPS/GNSS signal; (c) measuring carrier to noise ratio of the at least one GPS/GNSS satellite; (d) dithering the single directionally steered antenna to obtain an angular measurement relative to an antenna pattern bore-sight reference; (e) repeating steps (b)-(d) to determine a second angular measurement of the direction of a second GPS signal; (f) determining attitude errors of the platform using the first and second angular measurements; (g) updating the platform position and attitude.