The GPS Payload (GPSP) on OSTM/Jason-2 is a tracking system that
receives dual-frequency navigation signals continuously and
simultaneously from 16 GPS satellites to determine the exact
position of a transmitter. The GPSP supports precise orbit
determination by the DORIS system. It also helps to improve
gravity field models and provides data for satellite positioning
accurate to about 50 meters and 50 nanoseconds. Additional
information on the GPSP is available on the AVISO site. The
Turbo Rogue Space Receiver (TRSR) is a high performance GPS
receiver designed to provide backup precise orbit determination
for Jason-1. It measures precise GPS "pseudorange" and
continuous carrier phase data from up to 12 GPS satellites. The
TRSR views the GPS satellites through an up-looking antenna
which provides a nearly hemispherical field of view. There are
two complete redundant TRSR systems carried on Jason-1. Data
from the TRSR will be analyzed in post processing to produce
continuous Jason-1 orbits. Additional informati