CAJ | 학술논문

针对当前精准农业无线传感器网络（ WSN ）定位节点抗干扰能力差、功耗大以及精度低等缺点，设计了一种基于数字频率合成器的精准农业WSN定位节点。该节点采用数字频率合成器来替代传统 WSN 定位节点中的模拟式频率合成器。经测试发现，所设计WSN定位节点不仅能够将功耗降低约200 mW、相位噪声减少约43 dB/Hz ，而且定位误差减小至1．59 cm。所研究的WSN 定位节点特别适用于农田甚至大田条件下对抗干扰能力、功耗以及定位精度要求较高的精准农业领域。
침대당전정준농업무선전감기망락（ WSN ）정위절점항간우능력차、공모대이급정도저등결점，설계료일충기우수자빈솔합성기적정준농업WSN정위절점。해절점채용수자빈솔합성기래체대전통 WSN 정위절점중적모의식빈솔합성기。경측시발현，소설계WSN정위절점불부능구장공모강저약200 mW、상위조성감소약43 dB/Hz ，이차정위오차감소지1．59 cm。소연구적WSN 정위절점특별괄용우농전심지대전조건하대항간우능력、공모이급정위정도요구교고적정준농업영역。
In view of the shortcomings of poor anti-interference ability , high power consumption and low precision on wireless sensor network ( WSN) nodes in current precision agriculture , we designed a kind of precision agriculture WSN node based on digital frequency synthesizer .The WSN positioning node uses the digital frequency synthesizer to replace traditional analog frequency synthesizer .After testing , the design of WSN positioning nodes can reduce power consump-tion about 200mW, reduce the phase noise about 43 dB/Hz, and the positioning error is reduced to 1.59cm.The de-signed WSN localization node is particularly suitable for farmland , or other conditions which have requirements of anti-jamming capability , power consumption , and positioning accuracy in precision agriculture .