GPS Module PMB-688 SiRF problem

ggg558877

Hi everyone
I have a problem about GPS Module PMB-688 SiRF
I use propeller to get GPS date
and the data is right
but I found the Latitude and Longitude have change only in first few seconds after Position
When I walked approximately 50m it change once
if i want 1m change once
what can i do?
thanks

Peter Jakacki

ggg558877 wrote: »

Hi everyone
I have a problem about GPS Module PMB-688 SiRF
I use propeller to get GPS date
and the data is right
but I found the Latitude and Longitude have change only in first few seconds after Position
When I walked approximately 50m it change once
if i want 1m change once
what can i do?
thanks

Sounds like you the GPS isn't receiving enough satellites to get a good fix. You only need one satellite for date and time though. Make sure you test this out of doors in the open.

ggg558877

Peter Jakacki wrote: »

Sounds like you the GPS isn't receiving enough satellites to get a good fix. You only need one satellite for date and time though. Make sure you test this out of doors in the open.

Hi Peter
I'm test this out of door
and i receiving 8-10 satellites
Is this relate with "smart mode"?
because i use "raw mode" to receive GPRMC.... string now

shimniok

maybe this will help? http://forums.parallax.com/showthread.php/145213-Adjusting-the-GPS-speed-sensitivity

ggg558877

shimniok wrote: »

maybe this will help? http://forums.parallax.com/showthread.php/145213-Adjusting-the-GPS-speed-sensitivity

Hi shimniok
I have solved the problem its static navigation
thanks a lot