摘要
针对无线电干涉定位系统(RIPS)受模糊解问题的制约,难以适用于大范围稀疏布设的无线传感器网络的缺点,提出了一种两频率间隔配置方法(two frequency intervals method,TFIM).通过理论和仿真分析,得到RIPS定位精度与测量频率数及测量系统占据的总带宽的平方成正比的结论.仿真与实验结果表明:在相同的测量频率数和带宽条件下,TFIM可以在保持定位精度的同时显著扩大节点的布设距离,克服了大距离布设时的系统定位精度不高的问题,拓展了RIPS的应用范围.
As RIPS（radio interferometric positioning system）is limited by the ambiguity problem which is not suitable for sparse networks,a scheme called TFIM（two frequency intervals method） was put forward.It was concluded that RIPS′s localization accuracy related favorably to the amount and the bandwidth of the measurement frequencies according to theoretical and simulation analysis.Simulations and field experiments show that TFIM can enlarge non-ambiguous range with comparable localization accuracy,which makes it a candidate to be employed RIPS over wide areas.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第7期95-99,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(61071115)
关键词
无线电干涉定位系统
测量参数
频率间隔
非模糊距离
测量精度
RIPS（radio interferometric positioning system）
measurement parameters
frequency interval
unambiguous range
measurement accuracy
