This paper presents the development of a multi-functional and miniature GPS receiver in NASDA. The investigation for the design and implementation method for the spaceborne GPS receiver has been conducted. And a bread-board model of parallel signal search on matched filtering technique, which is an essential technique of the multifunctional GPS receiver, was manufactured. And time to acquisition (TTA) of GPS signal was measured using GPS simulator. The test results of the trial product show that TTA is 60 ms and time to first fix (TTFF) of the navigation calculation in a low-altitude orbit is within 5.3 min in worst case.
This paper presents the development of a miniature multifunctional GPS receiver at NASDA. The design and implementation method for a spaceborne GPS receiver has been investigated, and a breadboard model of a parallel signal search system incorporating matched filtering, an essential technique for next-generation GPS receivers, has been manufactured. The time to acquisition (TTA) of a GPS signal was measured on the breadboard model using a GPS simulator. The test results of the trial product show that TTA is within 60 msec, and time to first fix (TTFF) of the navigation calculation in a low-altitude orbit is within 5.3 min in the worst-case scenario.
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