Scalloping is a radar phenomenon that reduces sensitivity for certain distance and velocity combinations. The name is derived from the appearance of areas that are scooped out of graphs that indicate radar sensitivity. Moving objects cause a phase-shift within the transmit pulse that produces signal cancellation.

尖脉冲抑制的主要思想是利用线性预测谱估计算法，通过相邻Burst数据外推来补全Burst之间的空缺数据，从而抑制由多个Burst相干处理所引起的尖脉冲，即“矛刺”。 最后，带宽为200 MHz的C波段机载SAR系统实验处理结果验证了该文所提方法的有效性。 Abstract: In this study, we present a modified full-aperture imaging algorithm that includes scalloping correction and spike suppression for sliding-Mosaic-mode Synthetic Aperture Radar (SAR).

Jan 10, 2025 · Abstract: Scanning synthetic aperture radar (ScanSAR) is the dominant imaging mode of existing SAR satellites. However, in this mode, a burst operation is utilized, resulting in scalloping problems that significantly impact the quality of ScanSAR images.

扫描合成孔径雷达(Scanning Synthetic Aperture Radar, ScanSAR) 是星载合成孔径雷达(Synthetic Aperture Radar, SAR)技术发展的重要方向,其宽幅的测绘能力,有利于缩短全球观测周期和对变化较快的大规模地表现象进行监测。 ScanSAR在一个. 合成孔径时间内,沿距离向多次扫描并接收多个子带数据,从而可以获得数倍于传统条带SAR的测绘带宽。 我国首颗C 频段多极化高分辨率SAR卫星高分三号(GF-3)也搭载了扫描工作模式,其宽幅扫描模式能获得500 km的成像幅宽,全球观测成 …

Dec 23, 2011 · This letter presents an investigation on scalloping correction in the Terrain Observation by Progressive Scan (TOPS) imaging mode for synthetic aperture radar systems with electronically steered phased array antennas. A theoretical simulation of the scalloping is performed, and two correction methods are introduced.

Feb 8, 2024 · The synthetic aperture radar scan (ScanSAR) mode can change the antenna angle during operation and obtain a wide swath by scanning multiple strips at one time. However, due to discontinuous working in azimuth, the scalloping effect in …

摘要 星载扫描合成孔径雷达 (ScanSAR)采取Burst工作模式,该模式在获得宽幅测绘能力的同时,也导致图像中产生了固有的扇贝效应,严重影响图像的视觉效果和定量应用。 该文结合对ScanSAR图像方位向统计特性的分析,针对现有... 展开更多 星载扫描合成孔径雷达 (ScanSAR)采取Burst工作模式,该模式在获得宽幅测绘能力的同时,也导致图像中产生了固有的扇贝效应,严重影响图像的视觉效果和定量应用。 该文结合对ScanSAR图像方位向统计特性的分析,针对现有滤波模型稳定性差和 …

Abstract: In this study, we present a modified full-aperture imaging algorithm that includes scalloping correction and spike suppression for sliding-Mosaic-mode Synthetic Aperture Radar (SAR). It is innovational to correct the azimuth beam-pattern weighting altered by radar antenna rotation in the azimuth during the de-ramping preprocessing ...

Aug 1, 2022 · Spaceborne scanning synthetic aperture radar (ScanSAR) is widely used in global observations due to its ability to perform wide-swath mapping in the range direction. However, its special working mode causes scalloping, which reduces the quality of images and affects subsequent applications.

Scalloping is a radar phenomenon that reduces sensitivity for certain distance and velocity combinations. The name is derived from the appearance of areas that are scooped out of graphs that indicate radar sensitivity. Moving objects cause a phase-shift within the transmit pulse that produces signal cancellation.