Trajectory Boundary Design Method for Mobile Platform Bistatic Forward-looking SAR Transmitting Station
A bi-base forward-looking and transmitting station technology, applied in computing, instruments, electrical digital data processing, etc., can solve problems such as complex calculations, lack of consideration of imaging, unfavorable trajectory planning and design, etc., to achieve accurate trajectory boundaries and applicability The effect of strengthening and simplifying the design process
Active Publication Date: 2018-11-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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However, this method needs to iteratively solve the problem in the process of generating the trajectory, and the calculation is complicated. Moreover, the condition of imaging is not considered in the calculation process, which is not conducive to trajectory planning and design.
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[0023] In order to describe content of the present invention conveniently, at first the following terms are explained:
[0024] Term 1: Bistatic forward-looking SAR
[0025] Bistatic forward-looking SAR refers to the SAR system in which the transmitting station and receiving station of the system are separated on different platforms, at least one of which is a moving platform, and the receiving station is facing forward-looking imaging, which is conceptually a bistatic radar. For details, see the literature "Yang J, Huang Y, Yang H, et al. A first experiment of airborne bistatic forward-looking SAR-Preliminary results [C]. Geoscience and Remote Sensing Symposium (IGARSS), 2013IEEE International.IEEE,2013:4202- 4204."
[0026] Term 2: Motorized Platform
[0027] The mobile platform refers to the radar system carrying platform with high-efficiency maneuverability during movement. For details, see the literature "Xu Guoliang, Zhang Xun, Wang Yong. High-speed mobile anti-ship m...
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The invention proposes a trajectory boundary design method of a mobile platform bistatic forward-looking SAR transmitting station. Based on the theory of bistatic forward-looking SAR imaging resolution, under the premise of knowing the trajectory of the radar receiving station platform and the reference trajectory of the transmitting station, the grid division of the space coordinates of the segmented trajectory and the space of the bistatic forward-looking SAR imaging resolution are used. According to the distribution characteristics, the trajectory boundary of each segment of the transmitting station is designed to meet the limitation of imaging resolution. In the process of obtaining the trajectory boundary, the method of the present invention not only considers the resolution limitation, but also adds imaging condition constraints, so that the obtained trajectory boundary is more accurate; the method does not need iterative calculation in the obtaining process, which effectively simplifies the launch The design process of the station trajectory boundary; and the imaging constraints can be adjusted according to the actual imaging quality requirements, making the method of the present invention more flexible and more applicable.
Description
technical field [0001] The invention belongs to the technical field of radar imaging, and in particular relates to the boundary design of the motion track of a mobile platform bibase forward-looking synthetic aperture radar in the field of radar imaging. Background technique [0002] Synthetic Aperture Radar (SAR) is an all-weather, all-time high-resolution imaging radar, which is widely used in battlefield perception and reconnaissance, geographic information collection, agricultural and forestry environmental monitoring, geological and landform exploration, marine resource utilization and other fields. It has extremely high application value. Bistatic forward-looking SAR is a new system imaging radar. The transmitting station and receiving station are separated on different platforms. Through specific geometric configuration and imaging processing, high-resolution imaging directly in front of the receiving station can be realized. The characteristics of separate transceiv...
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IPC IPC(8): G06F17/50
CPCG06F30/00
Inventor 武俊杰裴季方冀彦杰黄钰林杨建宇杨海光杨晓波汪宗福胡奇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA