ROMULUS states for Radio Occultation Measurement Unit for LEO and Upper Stratosphere. It's name also evokes our city and its origins.
Up above our heads there are tenths of global navigation satellites, like the GPS ones. They transmit signals that cross the empty space, pass through the dense atmosphere, and are received by our phones. In this passage, the signal is disturbed, and its wavelength and frequency are slightly modified.
Here's the plan: knowing the original signal, and comparing it to the modified one, it is possible to evaluate the profiles of temperature, density and pressure of the atmosphere.
This is usually done with lower orbit satellites or with ground equipment. We are going to do it with an experiment allocated inside a stratospheric balloon, with the use of software defined radios (SDR).
