GSSI SIR 30, Manual

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Geophysical Survey Systems, Inc. SIR® 30
Manual
MN 93-101 Rev E 105
Appendix B: Data Formats
RADAN File Format
3/1/2012
The RADAN DZT file is a binary file containing a header followed by scans of data. The header contains
information concerning the settings used to collect the data and the header size.
Note:
This information is provided to the User for informational use only. It is not supported by GSSI
technical support and is provided for those Users who are proficient in working in a C programming
environment.
A. Internal structures
struct tagRFDate // File header date/time structure
{
unsigned sec2 : 5; // second/2 (0-29)
unsigned min : 6; // minute (0-59)
unsigned hour : 5; // hour (0-23)
unsigned day : 5; // day (1-31)
unsigned month: 4; // month (1=Jan, 2=Feb, etc.)
unsigned year : 7; // year-1980 (0-127 = 1980-2107)
};
struct tagRFCoords // Start/End position
{
float rh_fstart;
float rh_fend;
};
struct RGPS // GPS record/system time SYNC
{
char RecordType[4]; // “GGA”
DWORD TickCount; // CPU tick count
double PositionGPS[4]; // Latitude (positive if 'N'), Longitude (positive if ‘E’),
// Altitude, FIXUTC
};
B. Constants and macros
// constants
const int MINHEADSIZE = 1024;
const int PARAREASIZE = 128;
const int GPSAREASIZE = 2 * sizeof(RGPS);
const int INFOAREASIZE (MINHEADSIZE - PARAREASIZE- GPSAREASIZE) ;
// structure member alignment macros
#define TYPEBYTE(x,n) BYTE x##[n]
#define SHORTBYTE(x) TYPEBYTE(x,2) // short int (16 bit)
#define FLOATBYTE(x) TYPEBYTE(x,4) // float
#define RFDATEBYTE(x) TYPEBYTE(x,4) // tagRFDate
#define COORDBYTE(x) TYPEBYTE(x,8) // tagRFCoords