SuperDARN Radar Software Toolkit (RST) 4.6

Key updates in version 4.6 of the Radar Software Toolkit (RST) include: Routine for removing non-gaussian noise/interference from fitacf files (fit_speck_removal) Routine to display the contents of old-format dat files (datdump) Shepherd (2017) elevation angle algorithm added to FITACF3.0 Ability to plot multiple fields of view with fov_plot Added missing mlt2mlon keyword to MLT_v2 IDL/DLM code make_grid detects and concatenates multiple input files automatically (deprecates -c flag) Check that the search noise is nonzero before using it to replace the skynoise in FITACF3.0 Check whether interferometer array is in front or behind main array when calculating elv_low/elv_high in FITACF2.5 Fixed bugs in plotting libraries, cdf file reading, make_grid and trim_raw Update hardware files for DCE and DCN, and PI institution information in radar.dat Improved compliance with GPLv3 license requirements Documentation updates The RST is actively developed and maintained by the SuperDARN Data Analysis Working Group (https://superdarn.github.io/dawg/)