Following governmental strategies to acquire “capability to watch for objects and natural phenomena that could harm satellites in orbit,” a number of ground-based radars (GBRs) have been deployed for space situational awareness (SSA). In particular, networks of GBRs support the characterization of possible collision trajectories for different types of debris against orbital assets. On the other side, despite increasing demands for augmenting space-based monitoring capabilities for near-earth SSA, there is no evidence of operative SpaceBorne Radars (SBRs) for debris detection and tracking. In the absence of experimental data, one may ponder the design of a novel SBR payload transceiver with specific benefits for SSA, especially if compared to GBRs inference capabilities. In line with this reasoning, this article provides, for the first time, a holistic and harmonizing ontological framework for possible environmental scenarios that an SBR may have to cope with. The objective of such an ontology is related to the conceptual modeling of both channel and target phenomenology as well as target motion models. This, in turn, paves the way for reasonable mathematical formulations and architectural paradigms for framing SBR-based detection and tracking techniques, mostly with respect to small-size hypervelocity targets.

中文翻译：

---

星载雷达碎片探测和跟踪本体：通道目标现象学和运动模型


根据政府战略，获得“监视可能损害轨道卫星的物体和自然现象的能力”，许多地基雷达（GBR）已被部署用于空间态势感知（SSA）。特别是，GBR 网络支持描述不同类型碎片与轨道资产可能发生碰撞的轨迹。另一方面，尽管对增强近地SSA天基监测能力的需求不断增加，但没有证据表明可用于碎片探测和跟踪的太空雷达（SBR）正在运行。在缺乏实验数据的情况下，人们可能会考虑设计一种新型 SBR 有效负载收发器，该收发器对 SSA 具有特定的好处，特别是与 GBR 的推理能力相比。根据这一推理，本文首次为 SBR 可能必须应对的可能环境情景提供了一个整体且协调的本体框架。这种本体的目标与通道和目标现象学以及目标运动模型的概念建模有关。这反过来又为构建基于 SBR 的检测和跟踪技术（主要针对小尺寸超高速目标）的合理数学公式和架构范例铺平了道路。