Interface for Signal and Noise propagation introduced

esbo_etc/classes/ITransmissive.py

@@ -0,0 +1,11 @@
+from abc import ABC, abstractmethod
+
+
+class ITransmissive(ABC):
+    @abstractmethod
+    def calcSignal(self):
+        pass
+
+    @abstractmethod
+    def calcNoise(self):
+        pass

esbo_etc/classes/__init__.py

@@ -1 +1,3 @@
 from esbo_etc.classes.config import *
+from esbo_etc.classes.ITransmissive import *
+from esbo_etc.classes.target import *