Automatic Extraction of Traffic Flows Using TerraSAR-X Along-Track Interferometry

被引：115

作者：

Suchandt, Steffen ^{[1
]}

Runge, Hartmut ^{[1
]}

Breit, Helko ^{[1
]}

Steinbrecher, Ulrich ^{[1
]}

Kotenkov, Alexander ^{[1
]}

Balss, Ulrich ^{[1
]}

机构：

[1] DLR, German Aerosp Ctr, D-82234 Wessling, Germany

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2010年 / 48卷 / 02期

关键词：

Along-track interferometry (ATI); synthetic aperture radar (SAR); TerraSAR-X; traffic measurement; SAR; RADAR;

D O I：

10.1109/TGRS.2009.2037919

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Spaceborne synthetic aperture radar (SAR) offers great potential for the measurement of ground traffic flows. A SAR with multiple receiving apertures aligned in flight direction repeatedly images the same ground area with a short time lag. This allows for an effective detection of moving ground objects, whose range variation translates into an interferometric phase signal between the receiving channels. The high-resolution German SAR satellite TerraSAR-X offers several ways to create multiple along-track apertures. We exploit this to demonstrate satellite-based traffic-flow measurements using along-track interferometry (ATI) and Displaced Phase Center Array techniques. In this paper, we address the usage of different TerraSAR-X ATI modes for data acquisition and describe an automatic near-real-time processing chain for the extraction of traffic information. The performance of this TerraSAR-X traffic processor is significantly driven by incorporating a priori knowledge of road networks. We present examples of automatic traffic detection as well as empirical evaluations thereof using different kind of reference data.

引用

页码：807 / 819

页数：13

共 32 条

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