Monostatic and Bistatic Low Frequency Ultrawideband SAR Imaging Experiment

• 作者: Chao Xie Fuhai Li Guangxue Wang Guoqian Wang Hongtu Xie Hui Xiao Lin Zhang Shaoying Shi Shiyou Xu Zengping Chen
• 来源期刊: 电脑和通信(英文)
• 学科: 医学
• 关键词: BISTATIC SYNTHETIC APERTURE RADAR Low Frequency ULTRAWIDEBAND Imaging EXPERIMENT
• 年，卷（期）: dnhtxyw_2018,（11）
• 页码范围: 67-76
• 页数: 10页
• 分类号: R73

摘要

Low frequency ultrawideband (LF UWB) synthetic aperture radar (SAR) has lately become of a particular interest to SAR community. Monostatic and bistatic LF UWB SAR system has the well foliage penetrating capability, high-resolution imaging and providing the increased information. In 2015, a monostatic and bistatic LF UWB SAR imaging experiment was conducted. In this experiment, the monostatic and bistatic data were collected simultaneously by operating a moving vehicle-based radar in the SAR mode, in conjunction with a stationary ground-based receiver. The aim was to investigate the imaging property of the bistatic LF UWB SAR system. The one pulse per second (1 PPS) signal in combination with the global position system (GPS) disciplined 100 MHz oscillator from the GPS receivers was used to implement the time and frequency synchronization in this SAR system. The bistatic SAR image was obtained by the subaperture spectrum-equilibrium method integrated with the fast factorized back projection (FFBP) algorithm. Bistatic experiment results are show to prove the validity of the bistatic LF UWB SAR imaging experiment.