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Radio Navigationmedium#1199

Mixed IRS/GPS navigation provides:

A

No improvement over IRS alone

B

IRS accuracy only

C

GPS accuracy only

D

Short-term accuracy of IRS combined with long-term accuracy of GPS

Correct

Explanation

Mixing IRS with GPS combines the short-term stability and high data rate of the IRS with the long-term position accuracy of GPS, correcting IRS drift.

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