Abstract
A Global Positioning System (GPS) pointing experiment using a single
five-channel AN/PSN-9 GPS receiver developed for military manpack/vehicular
applications is described. The AN/PSN-9 basically a dual-port per
channel design, which results in minimum hardware and highest pointing
accuracy by using common hardware to perform the GPS differential
phase measurements from two GPS antennas. Procedures to solve for
the phase double-difference ambiguities are described, and results
are presented which demonstrate pointing solution convergence in
less than 10 s with arbitrary movement of the antenna beam. Pointing
estimates based on filtered, unambiguous phase double-difference
observables from AN/PSN-9 GPS pointing unit indicate the potential
of achieving 0.5-mr (0.3�) AZ pointing accuracy with only 1-m antenna
baseline separation
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