Monostatic and Bistatic Low Frequency Ultrawideband SAR Imaging Experiment  

作　　者：Hongtu Xie Zengping Chen Shiyou Xu Fuhai Li Shaoying Shi Lin Zhang Hui Xiao Guangxue Wang Chao Xie Guoqian Wang 

机构地区：[1]School of Electronics and Communication Engineering, Sun Yat-sen University, Shenzhen, China [2]College of Electrical and Information Engineering, Hunan University, Changsha, China [3]School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China [4]Air Force Early Warning Academy, Wuhan, China [5]Affiliated Hospital, Hunan Institute of Traditional Chinese Medicine, Changsha, China

出　　处：《Journal of Computer and Communications》2018年第11期67-76,共10页电脑和通信（英文）

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.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.

关 键 词：BISTATIC SYNTHETIC APERTURE RADAR Low Frequency ULTRAWIDEBAND Imaging EXPERIMENT 

分 类 号：R73[医药卫生—肿瘤]