Patent ID: 8264404

Claim:
A method in a Global Navigation Satellite System (GNSS) receiver double-nudged broadcast orbit drift correction, said method comprising: receiving a first broadcast orbit message to nudge a broadcast orbit in use at said GNSS receiver to create a first nudged broadcast orbit for a GNSS satellite, said first nudged broadcast orbit being more precise than said broadcast orbit; receiving a second broadcast orbit message sequentially after said receiving said first broadcast orbit message to nudge said first nudged broadcast orbit in use at said GNSS receiver to create a double-nudged broadcast orbit for a GNSS satellite, said double-nudged broadcast orbit being more precise than said first nudged broadcast orbit; and receiving a third broadcast orbit message sequentially after said receiving said second broadcast orbit message to maintain correct said double-nudged broadcast orbit, said third broadcast orbit message smaller in size than said second and said first broadcast orbit messages.