Triton Isis Manual de usuario descargar pdf (Pagina 112)

June 2004 Isis® Sonar User's Manual, Volume 2

102

ContactGroundRange

566 FLOAT Ground range to the contact

unassigned[2]

568 CHAR Unused

InternalFileName[248]

816 CHAR Internal use (passing

.CON/.TGT file name from

Target to Isis)

FishPitch

820 FLOAT Pitch in degrees (positive =

nose up)

FishRoll

824 FLOAT Roll in degrees (positive = roll to

stbd)

E.7.3 The Image Structure

Bitmap bits (BitmapWidth • BitmapHeight • BitsPerPixel/8) bytes. Each 8-bit

byte (0…255 for 8-bit data, -32768… +32767 for 16-bit data) is related to

sonar input voltage linearly from 0… +5 volts or –5… +5 volts, respectively.

A zero is always a low return, and the more negative or positive a value

gets, the stronger the acoustic echo.

E.7.4 Telemetry Structure

Target also uses a structure called Telemetry. Shown in Table E-8, the

structure keeps track of the telemetry information for each ping. The number

of pings is equal to the height. The total number of bytes for this entity is

BitmapHeight * sizeof(

telemetry). With this data, Target has detailed

information about every pixel in the image.

Don't change the size of this structure —

or else you won't be able to play back old contacts!

Appendix E: Using the Target Utility

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Triton Isis Manual de usuario Pagina 112