diff --git a/Campusnetz.ipynb b/Campusnetz.ipynb
index 54f657b..ec36fc9 100644
--- a/Campusnetz.ipynb
+++ b/Campusnetz.ipynb
@@ -2,15 +2,29 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": null,
    "id": "initial_id",
    "metadata": {
     "collapsed": true
    },
+   "source": "import sympy as sp",
    "outputs": [],
-   "source": [
-    ""
-   ]
+   "execution_count": null
+  },
+  {
+   "metadata": {},
+   "cell_type": "code",
+   "source": "",
+   "id": "82d514cd426db78b",
+   "outputs": [],
+   "execution_count": null
+  },
+  {
+   "metadata": {},
+   "cell_type": "code",
+   "source": "",
+   "id": "d3bce3991a8962dc",
+   "outputs": [],
+   "execution_count": null
   }
  ],
  "metadata": {
diff --git a/Transformationen.py b/Transformationen.py
index e69de29..9fe77f9 100644
--- a/Transformationen.py
+++ b/Transformationen.py
@@ -0,0 +1,30 @@
+# Transformation ITRF2020 --> ETRF89/DREF91 Realisierung 2025
+
+import sympy as sp
+
+# Helmetert Paramteter zur Referenzepoche t0
+to = 2015.0
+T1 = 41.1393
+T2 = 51.9830
+T3 = -101.1455
+D = 7.8918
+R1 = 0.8878
+R2 = 12.7748
+R3 = -22.2616
+dotT1 = 0
+dotT2 = 0
+dotT3 = 0
+dotD = 0
+dotR1 = 0.086
+dotR2 = 0.519
+dotR3 = -0.753
+
+# Testdatensatz der AdV
+tc = 2021.48
+
+BRMG = sp.Matrix([4245557.0412, 568958.1394, 4710200.0645])
+RANT = sp.Matrix([3645376.2264, 531202.1700, 5189297.0638])
+TIT2 = sp.Matrix([3993787.0533, 450204.1794, 4936131.8526])
+LDB2 = sp.Matrix([3798344.6978, 955553.3244, 5017221.8937])
+FFMJ = sp.Matrix([4053455.6399, 617729.9375, 4869395.8850])
+