Application of terahertz technology in cooperative detection of space targets

Terahertz wave has recently become a promising technology in detection and tracking of space targets, such as missiles and debris, where higher detection performance are required. In this paper, the advantages of terahertz radar applied in space targets detection are firstly exploited over the microwave-band radar. Although simulation results of micro-Doppler effect and SAR imaging have shown the advantages of terahertz wave in target detections, the narrow beam-width of terahertz wave also limits the application of target searching in vast area. This disadvantage, however, can be overcome by radar netting technology, which can make full use of detection resource by combing multi-radars in different locations, different types and different frequencies together. Therefore, we present a scheme of cooperative space targets detection based on terahertz and traditional microwave radars. Simulation results have demonstrated the usefulness of terahertz technology in space targets detection.