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README.md

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+# IonogramViewer2
+
+A program for scaling ionograms obtained using:
+
+ - IPS-42 ionosonde installed at the Ukrainian Antarctic "Akademik Vernadsky" station;
+ - Ionosonde in Shigaraki, Japan;
+ - SDR ionosonde developed in the Institute of Radio Astronomy (IRA NASU) and installed at the Ukrainian Antarctic "Akademik Vernadsky" station and in the Observatory of the Institute of Ionosphere (Kharkiv region, Ukraine);
+ - Ionosonde "Bazis" ("Базис") in the Observatory of the Institute of Ionosphere (Kharkiv region, Ukraine);
+ - Ionosonde installed in the Observatory of V. N. Karazin Kharkiv National University (Kharkiv region, Ukraine);
+ - DPS-4 digisondes (exported by SAOExplorer program).
+
+## Short manual:
+- Open file with an ionogram (Ctrl + O).
+- Mark critical frequencies of F2, F1 and E layers (right clicks).
+- Mark traces of F2, F1 and E layers (left clicks).
+- Save the results (Ctrl + S).
+- Go to the next (Ctrl + Space) or previous (Ctrl + Shift + Space) ionogram in the current directory.