Assessment of NTS-3 Acquisition Aiding signals: Benefits to Military GPS Receiver Performance, Spectrum Compatibility, and Use Cases
Philip Dafesh and Alex Eapen, The Aerospace Corporation
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The NTS-3 satellite will conduct a number of acquisition signal aiding experiments designed to improve M code signal acquisition performance. These acquisition aid candidates can vary from M code in both spectral characteristics and transmitted signal power levels.
In this work, we compare the acquisition performance of aided M code acquisition signal candidates to that unaided direct M code acquisition. The results include the practical limits of integration period for each signal candidate and the resultant impacts on Time-To-First-Fix (TTFF) and performance in terms of received signal power.
We will also investigate the impact of using acquisition aiding signals on the complexity of the GPS receiver signal acquisition process, and compare that complexity to traditional approaches.
Finally, we will assess the benefits of these signals to a number of use cases that address the operational use by future military GPS receivers.