BIAS.TXT

BIAS.TXT

Category B	Version 3.0.1

Description

Non-primary option. This is a special use case for SPC. If the file exists, then the code is processed and executed.

BIAS.TXT allows you to make a small systematic shift to the spacecraft in the inertial frame from the SPK. It is designed for when you have a constant offset that you detect during approach and wish to put that same value in for all of the approach images. This allows corrections from REGISTER option G to be used before spk files are changed by FDS for immediate iteration.

Columns

X	Y	Z
The offset in X	The offset in Y	The offset in Z

Units of X, Y and Z are in km.

Rows

The file has a single row, which has three entries. The offset in X, Y and Z.

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Example

Here is a sample BIAS.TXT file.

.0001 .002 .03