function?RSSI（）
%?未知節(jié)點(diǎn)利用鄰居錨節(jié)點(diǎn)進(jìn)行定位，沒有鄰居錨節(jié)點(diǎn)的未知節(jié)點(diǎn)無法定位
%?根據(jù)接收信號(hào)強(qiáng)度轉(zhuǎn)化為距離。規(guī)則傳播模型下得到的距離跟實(shí)際距離沒有誤差
%?不規(guī)則通信模型下，規(guī)則傳播模型下得到的距離跟實(shí)際距離存在誤差
%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
????load?‘../Deploy?Nodes/coordinates.mat‘;%此部分需要自己編寫
????load?‘../Topology?Of?WSN/neighbor.mat‘;????
????directory=cd;
????cd?‘../Topology?Of?WSN/Transmission?Model/‘;????
????cd（model）;
????unknown_node_index=all_nodes.anchors_n+1:all_nodes.nodes_n;
????for?i=unknown_node_index
????????neighboring_anchor_index=intersect（find（neighbor_matrix（i:）==1）find（all_nodes.anc_flag==1））;%只利用鄰居錨節(jié)點(diǎn)進(jìn)行定位
????????neighboring_anchor_n=length（neighboring_anchor_index）;
????????if?neighboring_anchor_n>=3
????????????try
????????????????dist=rss2dist（neighbor_rss（neighboring_anchor_indexi）1）;