Richard Jonathan T, Heimbeck Martin S, Blake Autin L, Everitt Henry O
J Opt Soc Am A Opt Image Sci Vis. 2017 Jul 1;34(7):1073-1079. doi: 10.1364/JOSAA.34.001073.
The combination of wide bandwidth W-band inverse synthetic aperture radar imagery and high-fidelity numerical simulations has been used to identify distinguishing signatures from simple metallic and dielectric targets. Targets are located with millimeter-scale accuracy using super-resolution techniques. Radon transform reconstructions of the returns from rotated targets approached the image quality of the complete data set in a fraction of the time by sampling as few as 10 angles. The limitations of shooting-and-bouncing ray simulations at high frequencies are illustrated through a critical comparison of their predictions with the measured data and the method of moments simulations, indicating the importance of accurately capturing the obfuscating role played by multipath interference in complex targets.
宽带W波段逆合成孔径雷达图像与高保真数值模拟相结合，已被用于识别简单金属和介质目标的独特特征。使用超分辨率技术可将目标定位在毫米级精度。通过对旋转目标回波进行Radon变换重建，通过仅对10个角度进行采样，就能在极短时间内达到完整数据集的图像质量。通过将其预测结果与实测数据以及矩量法模拟结果进行关键比较，揭示了高频下发射-反射射线模拟的局限性，这表明准确捕捉复杂目标中多径干扰所起的混淆作用非常重要。
