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Ground-based 21-cm experiments targeting the global signal from the periodsof Cosmic Dawn (CD) and Epoch of Reionization (EoR) are susceptible to adverseeffects presented by i) the ionosphere ii) antenna chromaticity induced byobjects in its vicinity iii) terrestrial radio frequency interference (RFI).Terrestrial RFI is particularly challenging as the FM radio band spanning over88-108 MHz lies entirely within the frequency range of the CD/EoR experiments($\sim 40-200$ MHz). Multiple space-based experiments have been proposed tooperate in the radio-quiet zone on the lunar farside. An intermediate option incost and complexity is an experiment operating in space in an orbit aroundEarth, which readily alleviates the first two challenges. However, the effectof RFI in Earth's orbit on the detection of global signal needs to bequantitatively evaluated. We present STARFIRE -- Simulation of TerrestriAlRadio Frequency Interference in oRbits around Earth -- an algorithm thatprovides an expectation of FM seeded RFI at different altitudes over Earth.Using a limited set of publicly available FM transmitter databases, which canbe extended by the user community, we demonstrate the use of the STARFIREframework to generate a three-dimensional spatio-spectral cube of RFI as wouldbe measured in Earth orbit. Applications of STARFIRE include identifyingminimum RFI orbits around Earth, producing RFI spectra over a particularlocation, and generating RFI heatmaps at specific frequencies for a range ofaltitudes. STARFIRE can be easily adapted for different frequencies, altitudes,antenna properties, RFI databases, and combined with astrophysical sky-models.This can be used to estimate the effect of RFI on the detection of global 21-cmsignal from Earth-orbit, and hence for sensitivity estimates and experimentdesign of an Earth orbiting CD/EoR detection experiment.

STARFIRE: An algorithm for estimating radio frequency interference in orbits around Earth