Magnitude of parameter adjustments The relative size of the data noise to effects of a parameter uncertainty on the observable determines in general whether a parameter should be estimated In some cases, certain combinations of parameters can not be estimated because the system is rank deficient (discuss some examples later How large are the uncertainties in the parameters that effect gPs measurements? 04/17/02 12.540Lec1804/17/02 12.540 Lec 18 4 Magnitude of parameter adjustments • The relative size of the data noise to effects of a parameter uncertainty on the observable determines in general whether a parameter should be estimated. • In some cases, certain combinations of parameters can not be estimated because the system is rank deficient (discuss some examples later) • How large are the uncertainties in the parameters that effect GPS measurements?