Multi-radar cooperative detection has significant advantages in maneuvering target tracking because of its wide coverage, good detection performance and strong survivability. As a key technology in cooperative detection of networking, multisource data fusion requires high precision and stability of fusion tracking. In this paper, Centralized Kalman Filter method is used to build a mathematical model by expanding dimension and direction finding quantity, and a new method is proposed to solve the fusion tracking problem of multi-radar in cooperative detection of maneuvering target by extending the estimation of nonlinear system for single sensor to the data fusion estimation of multi-sensor nonlinear system.
The research frontiers, hotspots and development trends related to satellites are important data for the study of satellite intelligence. In this paper, the scientific knowledge graph is applied to the field of satellite intelligence analysis. Using the satellite research data published on the network, Citespace is used to draw the cooperative knowledge graph, keyword co-occurrence graph and keyword clustering graph of satellite research. The research results show that the research heat of satellites in various countries is increasing, and the scientific research cooperation among institutions is closer. The research frontiers focus on humanitarian applications, communication secrecy, broadband Ka-band terminal design and anti-satellite warfare and so on.
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