Filter
Top Products
C Commands Summary
80 MiLLennium Command Descriptions Manual
ECUTOFF
This command sets the elevation cut-off angle for usable satellites. The GPSCard will not start tracking a satellite
until it rises above the cutoff angle; however, if a satellite being tracked drops below this angle, it will continue to
be tracked until the signal is lost.
Satellites that are below the cutoff angle will be eliminated from the internal position and clock offset solution
computations only. All satellites in view will still be tracked and their data logged; this data may be used in post
processing.
If there are more satellites in view than there are channels available, the channels which are tracking satellites
below the elevation cut-off will be reassigned to any healthy satellites above the cutoff which are not already
assigned to a channel.
This command permits a negative cutoff angle; it could be used in these situations:
• the receiver is at a high altitude, and thus can look below the local horizon
• satellites are visible below the horizon due to atmospheric refraction
Syntax:
Example:
ecutoff 5
NOTE 1: When ECUTOFF is set to zero (0), the receiver will track all SVs in view including some within a
few degrees below the horizon.
NOTE 2: Care must be taken when using
ECUTOFF because the information you are tracking from lower
elevation satellite signals are going through more atmosphere, for example ionospheric and tropospheric,
and therefore being degraded.
ECUTOFF angle
Syntax Range Value Description Default
ECUTOFF - Command
angle -90° to +90° Value in degrees (relative to the horizon). -90