Comparing GPS, Optical Leveling and Permanent Scatterers
نویسندگان
چکیده
Subject of this paper is the comparison of the results obtained exploiting the Permanent Scatterers (PS) Technique on ERS DInSAR data with displacement measurements carried out by means of optical leveling and GPS.
منابع مشابه
Iranian Permanent GPS Network Receivers Differential Code Biases Estimation Using Global Ionospheric Maps
Measurements of the dual frequency Global Positioning System (GPS) receivers can be used to calculate the electron density and the total electron content (TEC) of the ionosphere layer of the Earth atmosphere. TEC is a key parameter for investigating the ongoing spatial and temporal physical process of the ionosphere. For accurate estimation of TEC from GPS measurements, GPS satellites and GPS r...
متن کاملPermanent Scatterer InSAR Analysis and Validation in the Gulf of Corinth
The Permanent Scatterers Interferometric SAR technique (PSInSAR) is a method that accurately estimates the near vertical terrain deformation rates, of the order of ∼1 mm year(-1), overcoming the physical and technical restrictions of classic InSAR. In this paper the method is strengthened by creating a robust processing chain, incorporating PSInSAR analysis together with algorithmic adaptations...
متن کاملValidation of Point Scatterer Phase Statistics in Multi-pass Insar
In radar images, point scatterers provide reflections that can often be attributed to a single physical object, usually smaller than the resolution cell size. Stable point scatterers with high backscatter coefficients through time (mainly ’man-made features’) are potential targets for InSAR deformation analysis. A-priori knowledge about the observation statistics of InSAR point scatterer measur...
متن کاملارائه روشی برای ترکیب ژئوئید حاصل از GPS/Leveling با گرانیسنجی در یک مسئله مقدار مرزی تعیین ژئوئید
امروزه تعیین ژئوئید بهصورت نقطهای از تلفیق اطلاعات ترازیابی با GPS (ژئوئید GPS/Leveling) بهصورت گسترده مورد استفاده قرار گرفته است. در این مقاله از دادههای ژئوئید GPS/Leveling به عنوان یک مقدار مرزی در کنار سایر مقادیر مرزی در مسئلة تعیین ژئوئید استفاده شده است. الگوریتم مورد استفاده در این روش را میتوان در مراحل محاسباتی آن بهصورت زیر خلاصه کرد: (1) حذف اثرات توپوگرافی جهانی و جرمهای د...
متن کاملMulti-Temporal X-Band Radar Interferometry Using Corner Reflectors: Application and Validation at the Corvara Landslide (Dolomites, Italy)
From the wide range of methods available to landslide researchers and practitioners for monitoring ground displacements, remote sensing techniques have increased in popularity. Radar interferometry methods with their ability to record movements in the order of millimeters have been more frequently applied in recent years. Multi-temporal interferometry can assist in monitoring landslides on the ...
متن کامل