GNSS -- global navigation satellite systems : GPS, GLONASS, Galileo, and more
Citations
395 citations
Cites background from "GNSS -- global navigation satellite..."
...It consists of nominally 24 Medium Earth Orbit (MEO) satellites arranged in six orbital planes with approximately a 12-hour orbital period (even though currently there are more than 24 in operation) [58]....
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...The GLONASS system has made a welcomed comeback in recent years, and in 2011 re-achieved an operational constellation of 24 satellites [58]....
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...The Galileo constellation is the European Union’s effort to provide both an alternative and a complement to GPS [58]....
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287 citations
Cites background from "GNSS -- global navigation satellite..."
...The corresponding betweensatellite single-difference (SD) observation equations read then (Hofmann-Wellenhof et al. 2008)...
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...The corresponding betweensatellite single-difference (SD) observation equations read then (Hofmann-Wellenhof et al. 2008) φ ps u, j = g ps T xu − μ j ιpsu − dt ps + λ j ( z psu, j − δ ps, j ) p psu, j = g ps T xu + μ j ιpsu − dt ps − d ps, j (1) where φ psu, j and p ps u, j denote the SD…...
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285 citations
Additional excerpts
...The FPGA is characterized by a clock frequency of 200 MHz, 17 280 slices (each one of them containing four LUTs and four flip-flops), 128 blocks of RAM (each one can store up to 32 kbits of data) and 64 DSP48E slices (each one characterized by a 25 × 18 multiplier, an adder and an accumulator)....
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208 citations