The ionosphere model is applied to space based tracking where one satellite produces measurements of another satellite. To use the IonosphereModel attribute for a satellite, set its Enabled property to true and make the following selections:
|Ionosphere Model Options|
|Model||Select the desired version of the IRI model; currently only IRI2007 is available.|
|TransmitFreq||The frequency of the signal transmitted by a ground station (uplink) and received by the satellite. This frequency may be changed by the satellite's transponder before being retransmitted.|
|ReceiveFreq||The frequency of the signal transmitted by the satellite (downlink) and received by a ground station. As the result of a frequency change carried out by the satellite's transponder, this frequency may differ from that at which the original signal was received from the uplinking ground station.|
NOTE: The magnitude of the ionosphere range delay is inversely proportional to the square of the frequency. Thus, a higher frequency yields a lower ionospheric delay.