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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Strip Layering Diagram-Based Optimum Continuously Varying Pulse Interval Sequence Design for Extremely High-Resolution Spaceborne Sliding Spotlight SAR
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Strip Layering Diagram-Based Optimum Continuously Varying Pulse Interval Sequence Design for Extremely High-Resolution Spaceborne Sliding Spotlight SAR

机译：基于条形分层图的最佳连续变化脉冲间隔序列设计，用于极高分辨率的空间滑动SAR

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摘要

Applying a continuous varying pulse interval (CVPI) sequence is of significance for an extremely high resolution (EHR) spaceborne sliding spotlight synthetic aperture radar (SAR) for complete data acquisition. An optimum CVPI sequence should be the one leading to the minimum movement of the echoes of interest in a pulse train. However, such an optimization can be hardly conducted using the traditional timing diagram. Aiming at solving this problem, this article introduces a new graphic tool, referred to as the strip layering diagram, to achieve an optimum CVPI sequence for an EHR spaceborne sliding spotlight SAR. The basic rationale is to explicitly employ a new parameter eta to directly control the movement of the echoes of interest in a pulse train. The new strip layering diagram consists of two layered subdiagrams: one is the candidate subdiagram, consisting of the candidate strips presenting all the CVPI sequence candidates restricted by the data acquisition geometry; the other is the feasibility subdiagram, consisting of the feasibility strips marking all the feasible regions where the echoes of interest are not submerged by the transmitted pulses or contaminated by the nadir echoes. An optimum CVPI sequence can be accurately and efficiently achieved by sketching a line segment satisfying four conditions inside the strip layering diagram. The detailed comparisons between the new diagram and the traditional timing diagram are also provided, followed by computer simulations to validate the presented approaches.
机译：应用连续变化的脉冲间隔（CVPI）序列对于极高的分辨率（EHR）空间滑动聚光灯合成孔径雷达（SAR）具有重要意义，以完成数据采集。最佳的CVPI序列应该是导致脉冲系中感兴趣的回波的最小运动的序列。然而，可以使用传统的时序图几乎不进行这种优化。旨在解决这个问题，本文介绍了一种新的图形工具，称为条形分层图，以实现EHR星载滑动聚光灯SAR的最佳CVPI序列。基本理由是明确地使用新的参数ETA来直接控制脉冲训练中感兴趣的回波的运动。新的条带分层图包括两个分层子图：一个是候选子图，由呈现由数据采集几何体限制的所有CVPI序列候选的候选条带组成;另一个是可行性子图，由可行性条标记的可行性条标记，其中感兴趣的回波不会被透射脉冲浸没或被Nadir回波污染。通过速写满足条带分层图内的四个条件的线段可以精确且有效地实现最佳的CVPI序列。还提供了新图和传统时序图之间的详细比较，然后是计算机模拟以验证所提出的方法。

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  • 作者

    Wang Yan; Ding Zegang; Xu Pei; Chen Ke; Zeng Tao; Long Teng;

  • 作者单位

    Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China|Chongqing Innovat Ctr Beijing Inst Technol Chongqing 401120 Peoples R China;

    Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China|Chongqing Innovat Ctr Beijing Inst Technol Chongqing 401120 Peoples R China;

    Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China|Chongqing Innovat Ctr Beijing Inst Technol Chongqing 401120 Peoples R China;

    Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China|Chongqing Innovat Ctr Beijing Inst Technol Chongqing 401120 Peoples R China;

    Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China|Chongqing Innovat Ctr Beijing Inst Technol Chongqing 401120 Peoples R China;

    Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China|Chongqing Innovat Ctr Beijing Inst Technol Chongqing 401120 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Continuously varying pulse interval (CVPI); extremely high-resolution (EHR); spaceborne sliding spotlight synthetic aperture radar (SAR); strip layering diagram;

    机译：连续变化的脉冲间隔（CVPI）;极高分辨率（EHR）;空间发球滑动聚光灯合成孔径雷达（SAR）;剥离分层图;

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