Wireless Ad Hoc Sensor Network: An Overview Yu Hen Hu University of Wisconsin Dept. Elec and Computer Engr. hu@engr.wisc.edu ABSTRACT Wireless ad hoc sensor network is an emerging information technology for remote distributive monitoring. Unlike conventional sensor arrays, in an environmental monitoring sensor network, power conservation and wireless channel bandwidth conservation is of utmost importance. These energy and bandwidth constraints present fundamental challenges in developing distributive, collaborative, multi-modality networked sensing and actuation in a wide-area, unattended application. In this presentation, recent progresses in ad hoc wireless sensoring network information technology will be surveyed. Technical challenges in developing next generation ad hoc wireless sensor network applications will be discussed.