iGage iG5, Руководство пользователя

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iG5 User Manual 84
data rate can be very advantageous. If the receiver is used as
a base for UAV operation, 1 Hz data is preferred.
The receiver has 6,741,970,900 bytes available for user
observation files. The receiver will generate approximately 14
MB per hour with normal constellations at 1 Hz so
approximately 481 hours (20 24-hour days) of continuous
data can be stored on the receiver at the default rate. Setting
the rate to 30-seconds will increase the available recording
time 30 X.
Elevation Mask
The Elevation Mask determines the elevation above the
horizon where satellites will begin to be tracked. The default
is 0 degrees.
The NGS recommends a minimum value of 10-degrees. It is
best to allow the receiver to begin tracking satellites before
they reach 10-degrees so that all tracking has stabilized.
Duration Time
The Duration Time sets the maximum length of a single file.
The default is 1440-minutes which is 24-hours or 1-day.
OPUS will not accept a file that crosses midnight UTC twice.
This limits observations to 48-hours.
It is customary to collect 24-hour file chunks and splice them
together as needed for longer occupations.
Some advanced settings impact the Duration Time .
Site Name
The Site Name is included in the output file. It is highly
recommended that you leave the Site Name equal to the
device serial number. This ensures that unique filenames are
always generated by multiple receivers that run at the same
time.
When files are submitted to OPUS or exported by the iGage
iGx_Download tool you can edit the
Point Name and Point
Description contained in exported files.