GNSS Instantaneous Ambiguity Resolution and Attitude Determination Exploiting the Receiver Antenna Configuration

A novel instantaneous method for GNSS attitude determination utilising a new phase-difference ambiguity resolution approach is presented. A tripleantenna receiver configuration with baseline constraints is exploited for ambiguity resolution. It is shown that the ambiguity resolution and attitude determination problems can be solved using simple closed and semi-closed form solutions, without using GNSS codes. Simulation results demonstrate high success rates (> 90%) in most cases, even when the number of visible satellite vehicles is small.