Design Method of Radar Transmitter Orbit in Dive Section of Bistatic Forward-looking SAR
A bi-base forward-looking and design method technology, applied in the field of communication, can solve problems such as the inability to achieve accurate imaging of targets, the inability to maneuver to adjust flight trajectories, and the difficulty in accurate identification of targets.
Inactive Publication Date: 2016-11-09
成都市国科微电科技合伙企业(有限合伙)
View PDF5 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The disadvantage of this method is that during the dive and descent, the radar transmitter and radar receiver cannot maneuver to adjust the flight trajectory to achieve the best imaging of the radar receiver, and it is difficult to accurately identify the target
The disadvantage of this method is that it is only suitable for the low-speed platform of bistatic radar. When the radar platform moves at high speed, the method based on least squares polynomial fitting will no longer be applicable, and accurate imaging of the target cannot be achieved.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0068] The present invention will be further described below in conjunction with the accompanying drawings.
[0069] refer to figure 1 , the implementation steps of the present invention are as follows:
[0070] Step 1, modeling.
[0071] combine figure 2 , the method for establishing the bistatic forward-looking SAR cross track geometric model of the high mobility platform in the present invention is described: figure 2 Among them, point P represents the detection target, point A and point B represent the radar receiver and radar transmitter respectively, and point P is the coordinate origin, and the three-dimensional space coordinate system xyPz is established according to the right-hand spiral rule. Point A is located in the plane yPz, point B is located in the plane with the angle ψ to the vertical plane yPz, β g Indicates the bistatic angle between the radar transmitter and radar receiver relative to the target P, and g indicates the ground distance plane. The coor...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method for designing a track of a biostatic forward-looking SAR transmitter in the diving stage. The method comprises the steps of (1) establishing a model, (2) determining the initial position of the radar transmitter, (3) determining the position of the radar transmitter at the next moment, (4) calculating ground range resolution, (5) calculating Doppler resolution, (6) judging whether resolution conditions are met or not, (7) judging whether an instant deflection angle is zero or not, (8) increasing the attenuation step length, (9) judging whether an adjusted instant deviation angle is zero or not, (10) recording the parameters of the position of the radar transmitter at the next moment, (11) judging whether detection is completed or not and (12) integrating flight paths of the radar transmitter. According to the method for designing the track of the biostatic forward-looking radar transmitter in the diving stage, the linear attenuation model is adopted, the existing method that the track of the biostatic radar transmitter cannot be adjusted flexibly is abandoned, so that the radar transmitter can adjust the flight track autonomously, and therefore the optimal resolution of an object is achieved.
Description
technical field [0001] The invention belongs to the technical field of communication, and further relates to a method for designing a trajectory of a radar transmitter in a subduction section of a bistatic forward-looking synthetic aperture radar (Synthetic Aperture Radar, SAR) in the technical field of radar. The invention can realize accurate detection and identification of complex background targets and improve the anti-interference performance of the system. Background technique [0002] When the high-mobility platform enters the dive and descent phase, it is particularly important to obtain the characteristic information of the target directly in front of the radar in real time for target detection. The dual-base forward-looking synthetic aperture radar SAR transceiver platform is separated, and the dual-base configuration is reasonably set to make the receiving platform work forward. There is an angle between the range resolution direction and the Doppler resolution di...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/90
CPCG01S13/90G01S13/9043G01S13/9058
Inventor 李亚超孟自强张冲邢孟道
Owner 成都市国科微电科技合伙企业(有限合伙)