Yer Yüzeyi Kararlılığının Radar Uydu Görüntüleriyle Gözlenmesi

Year 2020, Volume: 1 Issue: 1, 53 - 60, 31.03.2020

Dave Poreh

Abstract

Uzaktan algılama, yeryüzündeki objeler hakkında herhangi bir fiziksel temas olmaksızın bilgi elde etme sanatıdır. Uzaktan algılamanın birçok sivil ve resmi uygulama alanları vardır. Interferometrik Sentetik Açıklıklı Radar tekniği (InSAR) yer yüzeyi deformasyonlarının ölçülmesi amacıyla yer bilimleri ve uzaktan algılama alanlarında kullanılmaktadır. Özellikle, Sabit saçıcılar (Persistent Scatterers Interferometry: PSI) interferometri tekniği ise, yer yüzeyindeki deformasyonları zamansal bazda ölçme yeteneğine sahiptir. Bu teknik, çok zamanlı radar görüntülerinden yer yüzeyine ilişkin deformasyon oranlarının zamansal karakteristiklerinin belirlenmesi amacıyla geliştirilmiştir. Bu makalede, InSAR ve PSI teknikleri açıklanmakta ve en son geliştirilen/kullanılan tekniklerin kullanılabilirliği analiz edilmektedir. Makale kapsamında, Mexico-City’ye ilişkin örnek bir çalışma incelenmiştir.

Keywords

Uzaktan algılama, Mexico City, InSAR, PSI, ENVISAT-ASAR, GPS

The Earth Surface Stability Observation by Satellite Radar Images

Abstract

Remote sensing is the art of acquisition of information about any objects (such as the Earth) without making any physical/close contact. Remote sensing has many vital civilian and none-civilian applications. Interferometric Synthetic Aperture Radar (InSAR) is a radar technique used in geoscience and remote sensing to measure the Earth surface deformation from 800 km above the Earth. In particular, Permanent/persistent/point-like Scatterer Interferometry (PSI) is a powerful remote sensing technique, which is able to measure the deformation on the Earth’s surface over temporal baselines. This technique was developed to estimate the temporal characteristics of the Earth’s deformation rates from multiple radar images acquired over time (series). This paper reviews InSAR and PSI techniques, and explains the current state of the art and potentials of the available radar remote sensing techniques. One case study is examined, pertaining to well-known deformation problem in the Mexico City area.

Keywords

Remote sensing, Mexico City, Mexico City, InSAR, InSAR, PSI, PSI, ENVISAT-ASAR, ENVISAT-ASAR, GPS, GPS

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