【摘要】 传统基于亮度的空间目标尺寸反演方法需结合探测器响应，其误差会影响尺寸反演的精度。为了解决这一问题，文章提出引入合作目标亮度信息来辅助尺寸反演的方法，将合作目标亮度信息与空间目标进行比对，消去误差较大的探测器响应，转化成精度更高的合作目标位置信息，从而实现反演精度的提高。首先建立了基于合作目标亮度和位置信息的空间目标观测模型，然后依据辐射度学推导空间目标尺寸反演解析式，给出计算误差，最后结合实例对模型进行验证。结果显示基于合作目标亮度信息的尺寸反演精度较传统方法提高约46.9%，说明引入合作目标辅助尺寸反演能够有效提升反演精度。更多还原

【Abstract】 Traditional brightness-based spatial target size inversion methods require the combination of detector response, and the response error can affect the accuracy of the inversion. This paper proposes a method that introduces cooperative target brightness information to assist in size inversion. The brightness information of cooperative targets is compared with spatial targets to eliminate the detector response with larger errors and then is transformed into more accurate position information of cooperative targets, thereby improving the accuracy of size inversion. This paper first establishes a spatial target observation model based on the brightness and position information of cooperative targets. Then based on the radiometry, the analytical formula for spatial target size inversion is derived, and the calculation error is given. Finally, the model is validated with an example. The result shows that the size inversion accuracy based on cooperative target brightness information is improved by about46.9% compared with traditional methods.更多还原