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Nowadays, the major GNSS systems are the american GPS and the russian GLONASS, however, in a near future the european project Galileo and the chinesse system COMPASS will become part of the current GNSS scenario. These systems will transmit for [...]texto impreso
Rodríguez Bilbao, I. ; Moreno Monge, Beatriz ; Rodríguez Caderot, Gracia ; Herraiz, M. ; Radicella, S. M. | Elsevier | 2015-01The ionosphere is one of the largest contributors to errors in GNSS positioning. Although in Precise Point Positioning (PPP) the ionospheric delay is corrected to a first order through the `iono-free combination', significant errors may still be[...]texto impreso
We present the new MAP3 algorithms to perform static precise point positioning (PPP) from multifrequency and multisystem GNSS observations. MAP3 represents a two-step strategy in which the least squares theory is applied twice to estimate smooth[...]
