Status of third AHRS filter if available. This is for ANU research
                group (Ali and Sean)

                roll                      : Roll angle (rad) (float)
                pitch                     : Pitch angle (rad) (float)
                yaw                       : Yaw angle (rad) (float)
                altitude                  : Altitude (MSL) (float)
                lat                       : Latitude in degrees * 1E7 (int32_t)
                lng                       : Longitude in degrees * 1E7 (int32_t)
                v1                        : test variable1 (float)
                v2                        : test variable2 (float)
                v3                        : test variable3 (float)
                v4                        : test variable4 (float)

def ahrs3_send(self, roll, pitch, yaw, altitude, lat, lng, v1, v2, v3, v4, force_mavlink1=False):
                '''
                Status of third AHRS filter if available. This is for ANU research
                group (Ali and Sean)

                roll                      : Roll angle (rad) (float)
                pitch                     : Pitch angle (rad) (float)
                yaw                       : Yaw angle (rad) (float)
                altitude                  : Altitude (MSL) (float)
                lat                       : Latitude in degrees * 1E7 (int32_t)
                lng                       : Longitude in degrees * 1E7 (int32_t)
                v1                        : test variable1 (float)
                v2                        : test variable2 (float)
                v3                        : test variable3 (float)
                v4                        : test variable4 (float)

                '''
                return self.send(self.ahrs3_encode(roll, pitch, yaw, altitude, lat, lng, v1, v2, v3, v4), force_mavlink1=force_mavlink1)