3HOFMANN WELLENHOF B, LICHTENEGGER H, COLLINS J. Global Positioning System: Theory and Practice[M]. Springer Verlag, 1997.
4BULUSU N, HEIDEMANN J, ESTRIN D. GPS-less low cost outdoor localization for very small devices[J]. IEEE Personal Communications Magazine, 2000, 7(5): 28-34.
5CARUS A, URPI A, CHESSA S, DE S.GPS-free coordinate assign- ment and routing in wireless sensor networks[A]. Proc 24th Annu Joint Conf. IEEE Comput Comrnun Soc (INFOCOM '05)[C]. 2005,1: 150-160.
6WARD A, JONES A, HOPPER A. A new location technique for the active office[J]. IEEE Personal Communications, 1997,4(5): 42-47.
8AKYILDIZ I F, SU W, SANKARASUBRAMANIAM Y, et al. A survey on sensor network[J]. IEEE Communication Magazine, 2002,8:102-114.
9HEINZELMAN W B,CHANDRAKASAN A P, BALAKRISHNAN H. An application-specific protocol architecture for wireless microsensor networks[J]. IEEE Transactions on Wireless Communications, 2002,1(4): 660-670.
10MING Y, LEUNG K K, MALVANKAR A. A dnamic clustering and energy efficient routing technique for sensor networks[J],IEEE Trans on Wireless Communications, 2007, 6(8):3069-3079.