Abstract: A method employs an unmanned aerial vehicle to carry an electromagnetic field measurement system to overcome environmental obstacles in measuring environmental electromagnetic field. The electromagnetic field measurement system senses the electromagnetic field of a spatial position in the environment to generate a sensing signal, then processes the sensing signal to remove the high-frequency electromagnetic interference generated by the operation of the unmanned aerial vehicle itself from the sensing signal, and converts the processed sensing signal into a digital signal. The digital signal is processed to extract at least one wave according to a fundamental frequency and a harmonic order, thereby removing the low-frequency electromagnetic interference from the digital signal. The extracted wave is employed in calculating an environmental electromagnetic field value of the spatial location.

Abstract: A method employs an unmanned aerial vehicle to carry an electromagnetic field measurement system to overcome environmental obstacles in measuring environmental electromagnetic field. The electromagnetic field measurement system senses the electromagnetic field of a spatial position in the environment to generate a sensing signal, then processes the sensing signal to remove the high-frequency electromagnetic interference generated by the operation of the unmanned aerial vehicle itself from the sensing signal, and converts the processed sensing signal into a digital signal. The digital signal is processed to extract at least one wave according to a fundamental frequency and a harmonic order, thereby removing the low-frequency electromagnetic interference from the digital signal. The extracted wave is employed in calculating an environmental electromagnetic field value of the spatial location.

Abstract: Methods for debugging designs are provided. First, signal correlation information for signals of a design at least two design level is obtained. Then, design descriptions corresponding to the design at the at least two design levels are loaded and presented in at least two sets of windows or at least two debugging processes which controls the respective set of windows. A selection of a first signal in a first set of windows or a first debugging process is received. In response to the selection, a second signal corresponding to the first signal is queried according to the signal correlation information, and the second signal in a second set of windows or a second debugging process is automatically selected.

Abstract: Methods for debugging designs are provided. First, signal correlation information for signals of a design at least two design level is obtained. Then, design descriptions corresponding to the design at the at least two design levels are loaded and presented in at least two sets of windows or at least two debugging processes which controls the respective set of windows. A selection of a first signal in a first set of windows or a first debugging process is received. In response to the selection, a second signal corresponding to the first signal is queried according to the signal correlation information, and the second signal in a second set of windows or a second debugging process is automatically selected.