Research On Control And Data Fusion Technology Of Distributed Through-the-wall Imaging Radar

Distributed through-wall radar uses node radars located at multiple different perspectives to cooperatively complete the robust detection of hidden targets in the building room,and to "see" the situation of multiple targets in the room through the partition wall to solve the traditional single-station through-wall detection Existing blind spots and target occlusion problems.It has important social significance and application value in the fields of counter-terrorism reconnaissance,law enforcement arrest and patient monitoring.Compared with the traditional single wall-through imaging radar independent detection,distributed wall-through imaging radar requires multiple node radars and fusion centers to work together.Therefore,the fusion center controls and manages multiple wall-through imaging radars and multiple walls.The research of imaging radar data fusion method is of great significance.Aiming at the problems of distributed wall-through radar management and data fusion,this paper studies the problems of multi-radar node networking,radar working state control,multi-node data fusion,single node and fusion center PC software design,etc.,and implements 3 wall-through radar Networking,management and control,and data fusion,as follows:1.Aiming at the joint work and control of node radar and fusion center,the distributed wall-through imaging radar management and control system analysis and network design were carried out.The wireless transmission scheme based on wireless local area network was selected by calculating the data transmission rate.Node radar and fusion were performed.The selection of the central hardware platform introduces the working principle and typical application scenarios of the distributed wall imaging radar control system;the control and control behavior of the node radar by the fusion center and the design of the control code are introduced;2.Aiming at the data fusion problem of multiple node radars,an image fusion method based on image segmentation and neighborhood filtering was studied.The two-dimensional Otsu image segmentation and neighborhood filters were used to process the node radar images,and the fusion rules for different regions were designed.The final detection result is obtained by fusing the radar images of multiple nodes,which has better fusion results than the additive fusion method;3.Based on the implementation of control behaviors and data transmission requirements,the node radar and fusion center host computer were developed,and the node radar transmitter control board was designed and manufactured.Transmission and fusion center control command control of node radar;4.The verification and analysis of the distributed through-wall imaging radar management and control system was carried out.The distributed through-wall imaging radar management and control system was recorded and tested.The measured data verified that the proposed fusion method has a good fusion effect.