Multi-turn space target three-dimensional imaging method based on improved OMP algorithm

• Main Authors: ZONG BINFENG, ZHENG SHUYU, ZHANG XIAOKUAN, ZHANG JINGWEI, WANG YANG, XU JIAHUA, MA QIANKUO
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC DIGITAL DATA PROCESSING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a multi-turn space target three-dimensional imaging method based on an improved OMP algorithm, and the method comprises the steps: building a signal model of a space target, and obtaining a two-dimensional ISAR imaging sequence; secondly, based on the sparse two-dimensional ISAR imaging sequences, utilizing an improved OMP algorithm to recover height information of a space target; and finally, combining the two-dimensional information of the two-dimensional ISAR imaging with the height of the space target to finally obtain the three-dimensional ISAR imaging of the space target. Experimental results show that compared with an existing imaging method, the three-dimensional imaging method provided by the invention has better imaging performance and can better balance the relationship between the calculation cost and the three-dimensional imaging quality. 本发明公开了一种基于改进的OMP算法的多圈次空间目标三维成像方法，首先，建立空间目标的信号模型，获得二维ISAR成像序列；其次，基于这些稀疏的二维ISAR成像序列，利用一种改进的OMP算法来恢复空间目标的高度信息；最后，通过将二维ISAR成像的二维信息与空间目标的高度相结