A method and system for micro-cloud computing is described. The power level and the channel of the radar signal may be detected. These spatially modulated images may then be subsequently processed, stored, communicated andor rendered. The differential amplifier includes a first input end for receiving a reference voltage and a second input end coupled to the first switch. The traversal through the body of water is performed primarily by converting initial potential energy of the apparatus into kinetic energy, it does not use propellers.