Abstract: Senso r placement i s o ne of the key topics addressed in sensor netw o rks study. This pa per pro poses a nov el sensor placement model and a so-called IN T EGER LOCAL COV algo ri thm wi th a mo re ef ficient cov erag e, based o n the modeling of the node characteri stics, terrain shield and preferentia l cov erag e of g rids as tha t analy zed by Dhi llo n S. S. . In the new placement scheme, the detection limi t of senso rs i s al so carefully modeled, such as the perception rang e and ang le of view , and th e ini tiatio n process is rev ised acco rding ly. Theoretical analy ses a nd the simulatio n demo nst ra te the ef fectiv eness and the out standing performance of the presented model compared w ith the original placement algo ri thms.

Key words: wireless sensor network, sensor model, coverage, placement algorithm