Abstract: A method for estimating a multipath error of a pseudo-range measurement value, according to an embodiment of the present invention, comprises the steps of: obtaining satellite navigation system information including a pseudo-range measurement value and a carrier wave phase measurement value; obtaining a carrier wave phase time difference measurement value by differentiating the carrier wave phase measurement value with respect to an arbitrary time; setting a monitoring variable for multipath error estimation by using the carrier wave phase time difference measurement value; detecting a change amount of a multipath error regarding the arbitrary time by using the monitoring variable, and determining a time period that can be used to estimate the multipath error; and estimating the multipath error at a specific time point by using the change amount of the multipath error relative to an arbitrary reference time.

Abstract: The present disclosure provides a mobile robot. The mobile robot includes a body, a pair of spin mops rotatably mounted to the body, a mop motor configured to provide a driving force to the pair of spin mops, an optical flow sensor configured to obtain bottom-view image information using light at a regular time interval, and a controller configured to determine whether the material of the floor is a troublesome material based on the bottom-view image information sensed by the optical flow sensor and to control, upon determining that the material of the floor is a troublesome material, the mop motor to perform an entry restriction operation.

Abstract: Provided is a method of controlling a component for a network system. The method of controlling a component for a network system includes recognizing energy information or additional information except the energy information, determining a driving method of the component on the basis of former driving information of the component according to the recognized information, and driving the component through the determined driving method.