NoahF
07-01-2010, 04:26 PM
I am planning a NMEA0183 GPS which operates at 5Hz (5 position updates per second) as input to my AFS. This GPS will be providing position input to four serial devices. Unfortunately, one of these devices limits max baud rate to 4800 baud.
Does anybody know if 4800 baud is a high enough serial data rate to get all 5 position updates per second into the AFS? I suspect that it is not. If not, how does the AFS performance change (degrade) if it gets only one position update per second as opposed to five?
Alternately, I could get yet another GPS and feed the device with the low data rate requirement with that, which would allow me to ramp up the data rate into the AFS to 9600 baud. But it is not clear to me that even 9600 baud is a high enough data rate to get 5 updates per second.
Can anybody shed some light on this?
Does anybody know if 4800 baud is a high enough serial data rate to get all 5 position updates per second into the AFS? I suspect that it is not. If not, how does the AFS performance change (degrade) if it gets only one position update per second as opposed to five?
Alternately, I could get yet another GPS and feed the device with the low data rate requirement with that, which would allow me to ramp up the data rate into the AFS to 9600 baud. But it is not clear to me that even 9600 baud is a high enough data rate to get 5 updates per second.
Can anybody shed some light on this?