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June 2004 Isis® Sonar User's Manual, Volume 2 10

0036 speedOfSoundInWater 4 FLOAT Sound velocity divided by

two in meters/sec loaded

from QMIPS.DAT; specified

with Isis Speed of Sound

command; usually 750.

0040 noLongerUsed 4 FLOAT Was initial sonar signal

divisor in Q-MIPS version

5.19 and earlier. Not

currently used, zeros.

0044 asyncChannelNumber 2 USHORT [0...4] for Q-MIPS, 0 if no

async channel. The async

channel must be the last

(highest number) channel

collected; not used by Isis.

0046 numSonarChannels 2 USHORT [1...4], number of analog

sonar channels being

digitized. In Q-MIPS, divide

sample rate by this number

to get the per-channel

sampling rate.

0048 ch1_processingAvailable 2 USHORT

0050 ch2_processingAvailable 2 USHORT

0052 ch3_processingAvailable 2 USHORT

0054 ch4_processingAvailable 2 USHORT

[0...3], indicates the

presence of, and

processing applied to, each

of the four input channels:

0: not present;

1: raw only;

2: corrected only;

3: both raw and corrected.

Navigation System Parameters

0056 navLatency

2 USHORT latency of navigation, in

ms.

Isis version 2.14 and later

Appendix A: Q-MIPS File Format

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