CN104931966B - 一种基于dcs算法的星载视频sar成像处理方法 - Google Patents
一种基于dcs算法的星载视频sar成像处理方法 Download PDFInfo
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- CN104931966B CN104931966B CN201510321383.7A CN201510321383A CN104931966B CN 104931966 B CN104931966 B CN 104931966B CN 201510321383 A CN201510321383 A CN 201510321383A CN 104931966 B CN104931966 B CN 104931966B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
- G01S13/9004—SAR image acquisition techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
Abstract
Description
成像参数 | 符号 | 所选参数值 |
方位向采样点数 | Na | 32768 |
距离向采样点数 | Nr | 4096 |
信号采样率 | fs | 270MHz |
信号带宽 | Bw | 220MHz |
脉冲宽度 | τ | 11us |
脉冲重复频率 | PRF | 9000Hz |
参考斜距 | Rref | 613.7km |
多普勒中心频率 | fd0 | 16.7Hz |
多普勒调频率 | fr0 | 21305.2Hz/s |
等效速度 | V | 7690.7m/s |
信号波长 | λ | 0.0084m |
光速 | c | 3×108m/s |
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CN109884630B (zh) * | 2019-01-28 | 2022-11-01 | 南京航空航天大学 | 基于gpu的圆迹视频sar实时成像的方法 |
CN110146882B (zh) * | 2019-04-03 | 2021-04-23 | 北京空间飞行器总体设计部 | 一种基于星载视频sar的运动目标检测与参数估计方法 |
CN110426708A (zh) * | 2019-08-14 | 2019-11-08 | 北京航空航天大学 | 一种基于方位向多通道的星载sar保相成像方法 |
CN111650601B (zh) * | 2020-06-01 | 2022-10-25 | 孙建锋 | 车载相干激光雷达高分辨3d成像方法及装置 |
CN111640147B (zh) * | 2020-06-04 | 2023-10-31 | 北京无线电测量研究所 | 用于步进频频带拼接的sar子图像配准方法、装置、计算机设备 |
CN112184749B (zh) * | 2020-10-09 | 2022-12-06 | 西安电子科技大学 | 基于视频sar跨域联合的动目标跟踪方法 |
CN115223511A (zh) * | 2021-04-21 | 2022-10-21 | 海信视像科技股份有限公司 | 显示调节方法、装置、设备及存储介质 |
CN113960602B (zh) * | 2021-12-22 | 2022-05-20 | 中科星睿科技(北京)有限公司 | 轨道误差信息生成方法、装置、电子设备和可读介质 |
CN114609635B (zh) * | 2022-03-17 | 2023-06-20 | 电子科技大学 | 一种基于视频合成孔径雷达的干涉测量方法 |
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EP0795762A2 (de) * | 1996-03-13 | 1997-09-17 | Deutsche Forschungsanstalt für Luft- und Raumfahrt e.V. | Verfahren zur Azimut-Skalierung von SAR-Daten und hochgenauer Prozessor zur zweidimensionalen Verarbeitung von ScanSAR-Daten |
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Application publication date: 20150923 Assignee: Shanghai Spaceflight Institute of TT&C And Telecommunication Assignor: BEIHANG University Contract record no.: X2021990000219 Denomination of invention: A method of spaceborne video SAR imaging processing based on DCS algorithm Granted publication date: 20180102 License type: Common License Record date: 20210413 |
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