Satellite Pseudoranges
I am trying to retrieve the Pseudoranges from the satellite to the GPS receiver mounted on the Husky robot. The type of messages I have related to GPS are :
sensor_msgs/NavSatFix
nmea_msgs/Sentence
sensor_msgs/TimeReference
geometry_msgs/TwistedStamped
geometry_msgs/PoseWithCovarianceStamped
All I can log now is GPS solution (longitude, latitude and altitude) which is part of the sensor_msgs/NavSatFix message . I wonder where can I find the Pseudoranges from the satellite to the GPS receiver.
Thanks in Advance,
Naz
The default ROS driver probably doesn't expose the data you're looking for. You should probably contact Clearpath or the GPS manufacturer directly.
Can you tell us what you're trying to do with the pseudoranges?
Sure, I am trying to estimate the relative distances between two vehicles. The two vehicles are equipped with GPS , using the Pseudoranges and the satellite positions the relative distance can be computed using the double differencing method.
Here is a link to the GPS integrated in our Husky robot (vehicle) : http://static.garmincdn.com/pumac/GPS...
A quick read of the datasheet suggests that your GPS doesn't provide pseudorange output.