The Jicamarca Radio Observatory (JRO) two-dimensional square array radar system operating at ~ 6-m wavelength was used to study the Moon and low Earth orbit satellites using the Range-Doppler inverse synthetic aperture radar technique also known as Delay-Doppler imaging. The radar data was collected on Oct 21, 2015. A circularly polarized coded pulse was transmitted from a quarter-array antenna segment during lunar transit over JRO. Dual-linear polarization receive systems were employed on two quarter-array segments and on two 1/64th array modules giving the longest possible baselines across the transit path. A Range-Doppler mapping technique that uses the rotational motion of the targets and an autofocusing motion and ionospheric delay compensation technique has been implemented to generate the two-dimensional maps of the point-target (Satellite) and range-spread target (Moon). A review of our technique and the maps obtained from these observations is presented herein. Range-Doppler maps of the Moon and satellites are instructive with regards to possible further improvement of the technique, especially regarding ionospheric compensation.

Jicamarca 射电天文台 (JRO) 二维方阵雷达系统在约 6 米波长下运行，用于利用距离多普勒逆合成孔径雷达技术（也称为延迟多普勒成像）研究月球和近地轨道卫星。雷达数据于 2015 年 10 月 21 日收集。在月球穿越 JRO 期间，从四分之一阵列天线段发射圆极化编码脉冲。双线性偏振接收系统用于两个四分之一阵列段和两个 1/64 阵列模块，在传输路径上提供最长的可能基线。距离多普勒测绘技术利用目标的旋转运动以及自动聚焦运动和电离层延迟补偿技术来生成点目标（卫星）和距离扩展目标（月球）的二维地图。本文对我们的技术和从这些观察中获得的地图进行了回顾。月球和卫星的距离多普勒图对于该技术的可能进一步改进具有指导意义，特别是在电离层补偿方面。