The SIG file is a binary file. It holds signal strength as calculated by a cartesian coverage and is assosiated with a picture file.
The location of the file is not mandatory as long as it is in the same folder with the raster image file that it is associated with.
mapfile.sig |
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Version System Fac e Freq Trh Tr1 sx sy pix SigData() |
Variables | |
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Integer here in VB is equivalent to a signed SHORT in C Single here in VB is equivalent to a FLOAT in C | |
Version | in HEX value 5A5A and is a file sanity check |
Mode | Describe the unit selected for the coverage 0=S-Unit, 1=dBm, 2=µV, 3=dBµV/m |
System | the system gain As Single |
Fac | the correction to get the dBµV/m As Single |
Freq | the frequency in MHz As Single |
Trh | the receiver threshold in dBm As Single |
Tr1 | the minimum value of the signal to draw As Single |
Sx and Sy | the data matrix size As Integer |
Pix | the draw size in pixels As Integer |
SigData() | The signal matrix in cB (10 x dB) as integer |