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NL5500's maximum measurable GPS speed

Minh To
Prodigy 75 points

Hi,

I wonder if anyone had measure the GPS speed higher than 108 km/hr on a product using the NL5500 chipset. 

What is the maximum measurable GPS speed with good accuracy for the NL5500 chip set? How high is the speed error at a speed around 180 km/hr?

If the HDOP is high (above 5), will the error in speed measurements be also high?

Best Regards,

Minh To