火力与指挥控制
火力與指揮控製
화력여지휘공제
FIRE CONTROL & COMMAND CONTROL
2013年
z1期
167-169,172
,共4页
孔祥善%隋国超%王原会%史贵林
孔祥善%隋國超%王原會%史貴林
공상선%수국초%왕원회%사귀림
近地无线传输%信号强度测试%无线信道建模
近地無線傳輸%信號彊度測試%無線信道建模
근지무선전수%신호강도측시%무선신도건모
near-ground wireless transmission%signal strength test%wireless channel modeling
当无线传感器节点贴近地面布设时,尽管四周地形地势较为空旷平坦,两点间的通信性能也会受到很大的影响。大量数据表明,近地无线信道特性与传统微蜂窝信道不同,无法利用现有模型对节点的覆盖范围作出准确预测。因此,针对典型应用环境,利用实测的方法对电波传播时的链路损耗进行了实测分析,通过拟合得出近地无线信道的传播模型,并对网络的覆盖范围进行了预测。所得模型可为近地无线传感器网络的设计规划提供参考。
噹無線傳感器節點貼近地麵佈設時,儘管四週地形地勢較為空曠平坦,兩點間的通信性能也會受到很大的影響。大量數據錶明,近地無線信道特性與傳統微蜂窩信道不同,無法利用現有模型對節點的覆蓋範圍作齣準確預測。因此,針對典型應用環境,利用實測的方法對電波傳播時的鏈路損耗進行瞭實測分析,通過擬閤得齣近地無線信道的傳播模型,併對網絡的覆蓋範圍進行瞭預測。所得模型可為近地無線傳感器網絡的設計規劃提供參攷。
당무선전감기절점첩근지면포설시,진관사주지형지세교위공광평탄,량점간적통신성능야회수도흔대적영향。대량수거표명,근지무선신도특성여전통미봉와신도불동,무법이용현유모형대절점적복개범위작출준학예측。인차,침대전형응용배경,이용실측적방법대전파전파시적련로손모진행료실측분석,통과의합득출근지무선신도적전파모형,병대망락적복개범위진행료예측。소득모형가위근지무선전감기망락적설계규화제공삼고。
when the wireless sensor nodes are deployed at a low altitude,signal transmission will be greatly impacted by the outside environment even if not in a complicated terrain. Lots of practical tests show great differences existing between the surface wireless channel and traditional micro-cellular wireless channel,it is impossible to predict the connection state or link quality between nodes accurately by using existing transmission models. This paper using the method of field measurement to analyze the link loss and coverage scope of the wireless transmission under the circumstances that the wireless sensor nodes are deployed on the earth surface with the outdoor environment is flat and open. The loss characteristic of wireless wave transmission can be acquired from the fitting result based on data processing,and the coverage of wireless nodes can be predicted by using the models. These results will provide basis for design and planning of the surface wireless sensor network.