一种2016HO3小行星探测雷达系统方案设计OA

To address the key challenges of the near-Earth asteroid 2016HO3 in the accompanying detection mode,including"zero-Doppler"observation,the masking of weak subsurface signals by strong surface echoes,and the coexistence of limited system resources with high-resolution requirements,this paper proposes a novel radar detection system integrating"multi-point multi-angle observation,long-term coherent accumulation,and stepped-frequency synthesized wideband".A software-defined architecture is adopted to achieve the dynamic reconfigurability of the operating frequency band and bandwidth,effectively balancing the detection depth and range resolution.By leveraging the asteroid's rotation and the probe's active orbital maneuvers to construct spatial observation diversity,with the long-term coherent accumulation technology,the system enables effective separation and signal-to-clutter ratio(SCR)enhancement of weak subsurface echo signals under strong clutter backgrounds,even in the absence of effective Doppler information.The simulation analysis demonstrates that,under the constraints of a transmit power of 10 W and an orbital altitude of 8 km,the system can achieve a range resolution of about 6 cm and a detection depth of over 100 m for asteroid 2016HO3,providing a feasible technical approach for the high-precision remote sensing detection of small celestial bodies'internal structures.