Get gps velocity

[allenizac]

how to i get the gps velocity from this two def or other ways

def get_location_metres(original_location, dNorth, dEast):
earth_radius = 6378137.0 #Radius of "spherical" earth
#Coordinate offsets in radians
dLat = dNorth/earth_radius
dLon = dEast/(earth_radiusmath.cos(math.pioriginal_location.lat/180))
​
#New position in decimal degrees
newlat = original_location.lat + (dLat * 180/math.pi)
newlon = original_location.lon + (dLon * 180/math.pi)
if type(original_location) is LocationGlobal:
targetlocation=LocationGlobal(newlat, newlon,original_location.alt)
elif type(original_location) is LocationGlobalRelative:
targetlocation=LocationGlobalRelative(newlat, newlon,original_location.alt)
else:
raise Exception("Invalid Location object passed")
​
return targetlocation;
​
def get_distance_metres(aLocation1, aLocation2):
dlat = aLocation2.lat - aLocation1.lat
dlong = aLocation2.lon - aLocation1.lon
return math.sqrt((dlatdlat) + (dlongdlong)) * 1.113195e5