This is a special plugin for SDR#. It averages a signal over time for a given frequency. The data can then be saved in a file consisting of two columns (frequency and signal). Additionally, this plugin canrecord a background, which can be used for signal correction. Amateur astronomers usually use the plugin to record the 1420 MHz hydrogen band. A detailed description of how to use it can be found on the famous RTL-SDR website.
Plugin download: AVE
The data is presented with the consent of Frans De Jong (pe1rxj). An amateur astronomer who strongly motivated me to make this plugin.
Another very interestinig project by Alex Pettit https://github.com/AP-HLine-3D/HLine3D