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The Space-Based Infrared System (SBIRS) is an important part of the anti-missile system. As the scale of SBIRS deployment expands, it will bring unprecedented pressure to the system. In this paper, we discussed the mission of SBIRS and the timeliness, accuracy, scalability and knowledge discovery challenges, explore advanced technologies that can improve the performance of SBIRS. Six technologies were studied in this paper: compressive sensing, on-board processing, cluster-based HPC system, parallel file system, NoSQL database, and data mining technology. And we introduced the related applications of technologies mentioned above. The result can provide ideas for the improvement of SBIRS.

In the current ORSM system, the target LOS direction error is existed in the station-center coordinate system. The essential principle about the measuring target LOS direction method by the attitude transformation matrix (ATM) is introduced. The fundamental cause about the error produced is analyzed. According to the different kinds of variable in the optics system, the several models of quantitative analysis for the error transferred in the measuring target LOS direction by the attitude transformation matrix are built. And then, the errors obtained from these models by reasonable data are worked out, and are compared with the actual errors. The results demonstrate these models' effectiveness.

This paper addresses the problem and the method to make high-resolution radar imaging of ship targets at sea. Based on the general ship 3-D swaying geometry, the paper analyses the effect of ship sailing velocity and 3-D rotation movements to SAR imaging mode, and then provides an imaging interval selection method with the R-D (range-Doppler) ISAR imaging algorithm. We stress the fact that the robustness and the facility of this method to deal with abound echo data in real-time engineering process. The ISAR imaging results of actual measured ship echo data proves the validly of this method.

Based on the mathematics model of pulse pairing histogram statistic method, this paper discusses the ambiguity reason of high-frequency pulse signal pairing using the histogram statistic method, and computer simulation is applied to prove that the extended pulse pairing histogram statistic method can not resolve the ambiguity of high-frequency pulse signal entirely, then this paper gives the method of multilevel extended pulse pairing histogram statistic method to wipe off the false peaks, computer's simulation proves the valid of ambiguity elimination.