Range-Doppler mapping of space-based targets using the JRO 50 MHz radar
Abstract
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.
Description
Date
2017-12-02
Keywords
Jicamarca , Range-Doppler , Motion compensation , Moon
Citation
Kesaraju, S., Mathews, J. D., Milla, M., & Vierinen, J. (2017). Range-Doppler mapping of space-based targets using the JRO 50 MHz radar. Earth, Moon, and Planets, 120 (3), 169-188. https://doi.org/10.1007/s11038-017-9510-0
Collections
Loading...
Publisher
Springer