The filtered local position (e.g. fused computer vision and
                accelerometers). Coordinate frame is right-handed,
                Z-axis down (aeronautical frame, NED / north-east-down
                convention)

                time_boot_ms              : Timestamp (milliseconds since system boot). 0 for system without monotonic timestamp (uint32_t)
                time_utc                  : Timestamp (microseconds since UNIX epoch) in UTC. 0 for unknown. Commonly filled by the precision time source of a GPS receiver. (uint64_t)
                estimator_type            : Class id of the estimator this estimate originated from. (uint8_t)
                x                         : X Position (float)
                y                         : Y Position (float)
                z                         : Z Position (float)
                vx                        : X Speed (m/s) (float)
                vy                        : Y Speed (m/s) (float)
                vz                        : Z Speed (m/s) (float)
                ax                        : X Acceleration (m/s^2) (float)
                ay                        : Y Acceleration (m/s^2) (float)
                az                        : Z Acceleration (m/s^2) (float)
                covariance                : Covariance matrix upper right triangular (first nine entries are the first ROW, next eight entries are the second row, etc.) (float)

def local_position_ned_cov_encode(self, time_boot_ms, time_utc, estimator_type, x, y, z, vx, vy, vz, ax, ay, az, covariance):
                '''
                The filtered local position (e.g. fused computer vision and
                accelerometers). Coordinate frame is right-handed,
                Z-axis down (aeronautical frame, NED / north-east-down
                convention)

                time_boot_ms              : Timestamp (milliseconds since system boot). 0 for system without monotonic timestamp (uint32_t)
                time_utc                  : Timestamp (microseconds since UNIX epoch) in UTC. 0 for unknown. Commonly filled by the precision time source of a GPS receiver. (uint64_t)
                estimator_type            : Class id of the estimator this estimate originated from. (uint8_t)
                x                         : X Position (float)
                y                         : Y Position (float)
                z                         : Z Position (float)
                vx                        : X Speed (m/s) (float)
                vy                        : Y Speed (m/s) (float)
                vz                        : Z Speed (m/s) (float)
                ax                        : X Acceleration (m/s^2) (float)
                ay                        : Y Acceleration (m/s^2) (float)
                az                        : Z Acceleration (m/s^2) (float)
                covariance                : Covariance matrix upper right triangular (first nine entries are the first ROW, next eight entries are the second row, etc.) (float)

                '''
                return MAVLink_local_position_ned_cov_message(time_boot_ms, time_utc, estimator_type, x, y, z, vx, vy, vz, ax, ay, az, covariance)