public string Decode(byte[] Data, string Time)
{
// Define output data buffer
string DataOut;
// Determine Length of FSPEC fields in bytes
int FSPEC_Length = ASTERIX.DetermineLenghtOfFSPEC(Data);
// Determine SIC/SAC Index
int SIC_Index = 2 + FSPEC_Length;
int SAC_Index = SIC_Index + 1;
// Extract SIC/SAC Indexes.
DataOut = Data[SIC_Index].ToString() + '/' + Data[SAC_Index].ToString();
// Creates and initializes a BitVector32 with all bit flags set to FALSE.
BitVector32 FourFSPECOctets = ASTERIX.GetFourFSPECOctets(Data);
// Loop for each FSPEC and determine what data item is present
for (int FSPEC_Index = 1; FSPEC_Index <= FSPEC_Length; FSPEC_Index++)
{
switch (FSPEC_Index)
{
case 1:
// 010 Data Source Identifier
if (FourFSPECOctets[Bit_Ops.Bit7] == true)
{
DataOut = DataOut + " 010:T";
I063DataItems[ItemIDToIndex("010")].IsPresent = true;
}
else
DataOut = DataOut + " 010:F";
// 015, Service Identification
if (FourFSPECOctets[Bit_Ops.Bit6] == true)
{
DataOut = DataOut + " 015:T";
I063DataItems[ItemIDToIndex("015")].IsPresent = true;
}
else
DataOut = DataOut + " 015:F";
// 030, Time of Message
if (FourFSPECOctets[Bit_Ops.Bit5] == true)
{
DataOut = DataOut + " 030:T";
I063DataItems[ItemIDToIndex("030")].IsPresent = true;
}
else
DataOut = DataOut + " 030:F";
// 050, Sensor Identifier
if (FourFSPECOctets[Bit_Ops.Bit4] == true)
{
DataOut = DataOut + " 050:T";
I063DataItems[ItemIDToIndex("050")].IsPresent = true;
}
else
DataOut = DataOut + " 050:F";
// 060, Sensor Configuration and Status
if (FourFSPECOctets[Bit_Ops.Bit3] == true)
{
DataOut = DataOut + " 060:T";
I063DataItems[ItemIDToIndex("060")].IsPresent = true;
}
else
DataOut = DataOut + " 060:F";
// 070, Time Stamping Bias
if (FourFSPECOctets[Bit_Ops.Bit2] == true)
{
DataOut = DataOut + " 070:T";
I063DataItems[ItemIDToIndex("070")].IsPresent = true;
}
else
DataOut = DataOut + " 070:F";
// 080, SSR / Mode S Range Gain and Bias
if (FourFSPECOctets[Bit_Ops.Bit1] == true)
{
DataOut = DataOut + " 080:T";
I063DataItems[ItemIDToIndex("080")].IsPresent = true;
}
else
DataOut = DataOut + " 080:F";
break;
case 2:
// 081, SSR / Mode S Azimuth Bias
if (FourFSPECOctets[Bit_Ops.Bit15] == true)
{
DataOut = DataOut + " 081:T";
I063DataItems[ItemIDToIndex("081")].IsPresent = true;
}
else
DataOut = DataOut + " 081:F";
// 090, PSR Range Gain and Bias
if (FourFSPECOctets[Bit_Ops.Bit14] == true)
{
DataOut = DataOut + " 090:T";
I063DataItems[ItemIDToIndex("090")].IsPresent = true;
}
else
DataOut = DataOut + " 090:F";
// 091, PSR Azimuth Bias
if (FourFSPECOctets[Bit_Ops.Bit13] == true)
{
DataOut = DataOut + " 091:T";
I063DataItems[ItemIDToIndex("091")].IsPresent = true;
}
else
DataOut = DataOut + " 091:F";
// 092, PSR Elevation Bias
if (FourFSPECOctets[Bit_Ops.Bit12] == true)
{
DataOut = DataOut + " 092:T";
I063DataItems[ItemIDToIndex("092")].IsPresent = true;
}
else
DataOut = DataOut + " 092:F";
// Spare
if (FourFSPECOctets[Bit_Ops.Bit11] == true)
DataOut = DataOut + " SPR:T";
else
DataOut = DataOut + " SPR:F";
// RE Reserved Expansion Field
if (FourFSPECOctets[Bit_Ops.Bit10] == true)
DataOut = DataOut + " RES:T";
else
DataOut = DataOut + " RES:F";
// SP Special Purpose Field
if (FourFSPECOctets[Bit_Ops.Bit9] == true)
DataOut = DataOut + " SPF:T";
else
DataOut = DataOut + " SPF:F";
break;
// Handle errors
default:
DataOut = DataOut + " UKN:T";
break;
}
CAT63DecodeAndStore.Do(Data);
}
// Return decoded data
return DataOut;
}