diff --git a/CHANGES.md b/CHANGES.md
index 3ecce0d44c684e8c8f873cd26c6757b4322dc6ba..36a662d17b8ecffca1cbbe9a5ea9d02be2793b3e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,13 @@
VECTO-CSE: Changes
===================
+#### 2016-01-21: v2.0.6-beta6 ####
+TUG improvements:
+
+ * New version number
+ * Bugfix control heading calculation in *.csms file
+ * Bugfix old functions for day changes deleted
+ * Update user manual and release notes
+
#### 2015-11-25: v2.0.5-beta6 ####
TUG improvements:
diff --git a/CSE/Calculation/Signal_identification.vb b/CSE/Calculation/Signal_identification.vb
index 9e48ad79c56aa8daf114b92bcfea2c33979c203a..09b96d38d742b718596884288fa574178ffbe041 100644
--- a/CSE/Calculation/Signal_identification.vb
+++ b/CSE/Calculation/Signal_identification.vb
@@ -69,14 +69,17 @@ Module Signal_identification
UTMCoordV = UTM(MSCOrg.latE(i) / 60, MSCOrg.longE(i) / 60)
Aae = QuadReq(UTMCoordV.Easting - UTMCoordP.Easting, UTMCoordV.Northing - UTMCoordP.Northing)
len(i) = Math.Sqrt(Math.Pow(UTMCoordV.Easting - UTMCoordP.Easting, 2) + Math.Pow(UTMCoordV.Northing - UTMCoordP.Northing, 2))
- If (Math.Cos(MSCOrg.latS(i) / 60 * Math.PI / 180) * Math.Sin(len(i) / (1852 * 60) * Math.PI / 180)) > 0 Then
- Head(i) = Math.Acos((Math.Sin(MSCOrg.latE(i) / 60 * Math.PI / 180) - Math.Sin(MSCOrg.latS(i) / 60 * Math.PI / 180) * _
- Math.Cos(len(i) / (1852 * 60) * Math.PI / 180)) / (Math.Cos(MSCOrg.latS(i) / 60 * Math.PI / 180) * _
- Math.Sin(len(i) / (1852 * 60) * Math.PI / 180))) * 180 / Math.PI
- If MSCOrg.latE(i) < MSCOrg.latS(i) Then Head(i) = 360 - Head(i)
- Else
- Head(i) = 0
- End If
+ If (Math.Sqrt(1 - (Math.Cos((MSCOrg.longS(i) - MSCOrg.longE(i)) / 60 * Math.PI / 180) * Math.Cos(MSCOrg.latS(i) / 60 * Math.PI / 180) * _
+ Math.Cos(MSCOrg.latE(i) / 60 * Math.PI / 180) + Math.Sin(MSCOrg.latS(i) / 60 * Math.PI / 180) * Math.Sin(MSCOrg.latE(i) / 60 * Math.PI / 180)) ^ 2)) <> 0 Then
+ Head(i) = Math.Acos((Math.Cos(MSCOrg.latS(i) / 60 * Math.PI / 180) * Math.Sin(MSCOrg.latE(i) / 60 * Math.PI / 180) - _
+ Math.Cos((MSCOrg.longE(i) - MSCOrg.longS(i)) / 60 * Math.PI / 180) * Math.Cos(MSCOrg.latE(i) / 60 * Math.PI / 180) * _
+ Math.Sin(MSCOrg.latS(i) / 60 * Math.PI / 180)) / (Math.Sqrt(1 - (Math.Cos((MSCOrg.longS(i) - MSCOrg.longE(i)) / 60 * Math.PI / 180) * _
+ Math.Cos(MSCOrg.latS(i) / 60 * Math.PI / 180) * Math.Cos(MSCOrg.latE(i) / 60 * Math.PI / 180) + _
+ Math.Sin(MSCOrg.latS(i) / 60 * Math.PI / 180) * Math.Sin(MSCOrg.latE(i) / 60 * Math.PI / 180)) ^ 2))) * 180 / Math.PI
+ If (MSCOrg.longE(i) - MSCOrg.longS(i)) < 0 Then Head(i) = 360 - Head(i)
+ Else
+ Head(i) = 0
+ End If
MSCVirt.meID.Add(MSCOrg.meID(i))
MSCVirt.dID.Add(MSCOrg.dID(i))
MSCVirt.KoordA.Add(KleinPkt(UTMCoordP.Easting, UTMCoordP.Northing, Aae, 0, -Crt.trigger_delta_y_max))
diff --git a/CSE/IO/input.vb b/CSE/IO/input.vb
index 7321e10f49331a82b71f69e45946309aad0c5378..1143679de84a76bd4ab1a1239b03e7b87c917ff7 100644
--- a/CSE/IO/input.vb
+++ b/CSE/IO/input.vb
@@ -452,7 +452,7 @@ Public Module input
InputData(sKV.Key).Add(CDbl(Line(sKV.Value)))
If sKV.Key = tComp.t Then
If tDim >= 1 Then
- If (InputData(sKV.Key)(tDim) < InputData(sKV.Key)(tDim - 1)) Then nDay += 1
+ 'If (InputData(sKV.Key)(tDim) < InputData(sKV.Key)(tDim - 1)) Then nDay += 1
If Math.Abs((InputData(sKV.Key)(tDim) - InputData(sKV.Key)(tDim - 1)) / (1 / HzIn) - 1) * 100 > Crt.delta_Hz_max Then
JumpPoint.Add(tDim)
End If
diff --git a/CSE/declaration_public.vb b/CSE/declaration_public.vb
index edd645c474d080a1329cf5e1369a143368775063..308f4b08847df2c8c42ddd2936729ac98871d268 100644
--- a/CSE/declaration_public.vb
+++ b/CSE/declaration_public.vb
@@ -13,7 +13,7 @@ Module declaration_public
' Description of the form
Public Const AppName As String = "Air Drag" ' Name of the programm
- Public Const AppVers As String = "2.0.5-beta6" ' Version of the Programm
+ Public Const AppVers As String = "2.0.6-beta6" ' Version of the Programm
Public AppDate As String ' Date of the compilation of the programm
' Control variables
diff --git a/DemoData/VECTO-Air Drag_InputData_V2.0.5_DemoData.xlsm b/DemoData/VECTO-Air Drag_InputData_V2.0.6_DemoData.xlsm
similarity index 98%
rename from DemoData/VECTO-Air Drag_InputData_V2.0.5_DemoData.xlsm
rename to DemoData/VECTO-Air Drag_InputData_V2.0.6_DemoData.xlsm
index 8a871d03a306ee2177cd1537fdbc738020de3fdd..aa82093226fcb254cbcce55dc994592ff0928ba3 100644
Binary files a/DemoData/VECTO-Air Drag_InputData_V2.0.5_DemoData.xlsm and b/DemoData/VECTO-Air Drag_InputData_V2.0.6_DemoData.xlsm differ
diff --git a/Docs/VECTO-Air Drag_ReleaseNotes_2.0.5-beta6.pdf b/Docs/VECTO-Air Drag_ReleaseNotes_2.0.5-beta6.pdf
deleted file mode 100644
index bcab256135aebf386ee4da6cffd2ccaf4641f9bb..0000000000000000000000000000000000000000
Binary files a/Docs/VECTO-Air Drag_ReleaseNotes_2.0.5-beta6.pdf and /dev/null differ
diff --git a/Docs/VECTO-Air Drag_ReleaseNotes_2.0.6-beta6.pdf b/Docs/VECTO-Air Drag_ReleaseNotes_2.0.6-beta6.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..08fbfa51a286b63c979303895f956a6aa4ace4a0
Binary files /dev/null and b/Docs/VECTO-Air Drag_ReleaseNotes_2.0.6-beta6.pdf differ
diff --git a/Docs/VECTO_Air Drag-User Manual_2.0.5-beta6.pdf b/Docs/VECTO_Air Drag-User Manual_2.0.6-beta6.pdf
similarity index 100%
rename from Docs/VECTO_Air Drag-User Manual_2.0.5-beta6.pdf
rename to Docs/VECTO_Air Drag-User Manual_2.0.6-beta6.pdf