public static PHYHeader ReadPHYHeader(BinaryReader reader)
{
PHYHeader header = new PHYHeader();
reader.BaseStream.Position = 0;
#region 1.1文件头
header.OPName = BaseFunction.ReadChar(reader, 20);//操作员
header.BTime = Convert.ToDateTime(BaseFunction.ReadChar(reader, 20));//文件生成时间,产生本工程值数据文件的时间。如：“2006-05-01 12:12:12”
header.FlyPlanAddr = reader.ReadInt32();//机型机号信息表的偏移首地址
header.ParaListAddr = reader.ReadInt32();//工程值参数表的偏移首地址,固定为256
header.PhyValueAddr = reader.ReadInt32();//数据流格式表的偏移首地址
#endregion
#region 1.2 机型机号信息表
reader.BaseStream.Position = header.FlyPlanAddr;
header.AircrfName = BaseFunction.ReadChar(reader, 8);//飞机机型
header.AircrfNum = BaseFunction.ReadChar(reader, 12);//飞机机号
header.StartTime = Convert.ToDateTime(BaseFunction.ReadChar(reader, 20));//起飞时间
header.EndTime = Convert.ToDateTime(BaseFunction.ReadChar(reader, 20));//结束时间
#endregion
#region 1.3工程值参数表
reader.BaseStream.Position = header.ParaListAddr;
header.PNum = reader.ReadUInt16();//组参数数目
header.SWNum = reader.ReadUInt16();//单开关量参数数目
#endregion
#region 1.4 获取飞参和GPS时间误差
int fp_startTime = BaseFunction.DateTimeToMSecond(header.StartTime);//飞参记录初始毫秒时间
header.FlySeconds = (header.EndTime.Hour * 60 + header.EndTime.Minute) * 60 + header.EndTime.Second -
(header.StartTime.Hour * 60 + header.StartTime.Minute) * 60 - header.StartTime.Second;//飞参记录时间长度（秒）
float time1 = 0, time2 = 0;
int totalCount = 0;
float[] fp10data = new float[10];//计算过程值
int errorTime;//飞参和GPS的误差时间（毫秒）
bool booleen1 = true;
bool booleen2 = ((header.FlySeconds - totalCount) > 10);
while (booleen1 && booleen2)
{
for (int m = 0; m < 10; m++)
{
reader.BaseStream.Position = header.PhyValueAddr + totalCount * 80 * header.PNum + 93 * 80;
fp10data[m] = reader.ReadSingle();
totalCount++;
}
time1 = fp10data[9] - fp10data[0];
time2 = fp10data[7] - fp10data[3];
booleen1 = !((time1 == 9000) && (time2 == 4000));
booleen2 = ((header.FlySeconds - totalCount) > 10);
}
if (booleen2 == false)
throw new PHYException();
else
{
reader.BaseStream.Position = header.PhyValueAddr + totalCount * 80 * header.PNum + 92 * 80;
float timeH = reader.ReadSingle();
reader.BaseStream.Position = header.PhyValueAddr + totalCount * 80 * header.PNum + 93 * 80;
float timeL = reader.ReadSingle();
int GPS_time = BaseFunction.GPSToMSecond(timeH, timeL);//GPS时间（秒）
int fp_time = fp_startTime + totalCount * 1000;
errorTime = fp_time - GPS_time;
}
//GPS初始时间
header.GPSStartTime = fp_startTime - errorTime;
#endregion
#region 1.5 截头去尾
#endregion
float T1 = 0, T2 = 0;
int timeCount = 0;
int timeCountEnd = 0;
bool isEnd = false;
while (T1 == T2)
{
reader.BaseStream.Position = header.PhyValueAddr + timeCount * 80 * header.PNum + 64 * 80;
T1 = reader.ReadSingle();
timeCount++;
reader.BaseStream.Position = header.PhyValueAddr + timeCount * 80 * header.PNum + 64 * 80;
T2 = reader.ReadSingle();
}
header.PhyValueAddr += (timeCount - 1) * 80 * header.PNum;
header.GPSStartTime += (timeCount - 1) * 1000;
while (!isEnd)
{
reader.BaseStream.Position = header.PhyValueAddr + timeCountEnd * 80 * header.PNum + 64 * 80;
T1 = reader.ReadSingle();
timeCountEnd++;
reader.BaseStream.Position = header.PhyValueAddr + timeCountEnd * 80 * header.PNum + 64 * 80;
T2 = reader.ReadSingle();
if (T1 == T2)
isEnd = true;
else
isEnd = false;
}
header.PhyValueEndAddr = header.PhyValueAddr + timeCountEnd * 80 * header.PNum;
header.FlySeconds = timeCountEnd;
//GPS结束时间
header.GPSEndTime = header.GPSStartTime + header.FlySeconds * 1000;
return header;
}
public static int GetFlyParamSeconds(PHYHeader header)
{
return (int)(header.PhyValueEndAddr - header.PhyValueAddr) / (header.PNum * PARAM_LENGTH);
}
/// <summary>
/// 读取某一秒的一个飞参数据
/// </summary>
/// <param name="reader"></param>
/// <param name="second">第几秒</param>
/// <param name="parameter"></param>
/// <returns></returns>
public static float[] ReadFlyParameter(BinaryReader reader, int second, PHYHeader header, FlyParameter parameter)
{
//设置要读取的飞参的起始位置
reader.BaseStream.Position = header.PhyValueAddr + (second - 1) * PARAM_LENGTH * header.PNum + (parameter.Index - 1) * PARAM_LENGTH;
float[] values = new float[parameter.Frequence];
for (int i = 0; i < parameter.Frequence; i++)
{
if (parameter.SubIndex == -1)
values[i] = reader.ReadSingle();
else
values[i] = Convert.ToSingle(BaseFunction.GetBit((int)reader.ReadSingle(), parameter.SubIndex));
}
return values;
}
