超大视场成像系统对空间目标的探测能力分析（英文）

Performance analysis of super-wide field of view imaging system used for space target detection

随着大视场探测技术的发展,超大视场成像系统已被应用于导弹预警、航天器舱外摄像、机载预警等许多领域。探讨了超大视场成像系统的空间应用问题,分析了系统对典型目标的探测能力。结果表明:与小视场红外成像系统相比,超大视场系统空间漏警率大为降低,这使得系统探测盲区更小;超大视场系统的空间分辨力较大,这使得目标像在单个像元上驻留时间更长,有利于目标的提取和检测;但超大视场系统探测灵敏度和探测距离性能相对较差。综合考虑,超大视场成像系统难以适用于远距离目标的探测,但是系统大视场成像的特殊优势使其在近距离全向空间态势感知和强辐射威胁的实时预警方面有很大的应用潜力。

With the development of wide-field detection technique, the super-wide Field of View（FOV） imaging system has been used in many advanced fields, such as missile pre-warning, extravehicular observation, airborne warning, and so on. The space application of super-wide FOV imaging system was discussed, and the advantages of space application were analyzed. The system detection performance was deduced theoretically and calculated numerically from five aspects. The results show that, compared with the small-field imaging systems, the super-wide FOV system has lower space false dismissal probability, which makes the system have less detection blind zone; the system has larger spatial resolution, which makes the target have a longer imaging time and benefits the target extraction; however, other performances of super-wide FOV system are relatively weaker. Considering all the performances, the super-wide FOV imaging system may not suitable for long-range space target detection, but can be used in omnidirectional Space Situation Awareness （SSA） and real-time threat warning of long-range strong radiation for the host satellite.