Results 21 to 30 of about 47,664 (300)

Quantum test of the Universality of Free Fall using rubidium and potassium [PDF]

, 2020
We report on an improved test of the Universality of Free Fall using a rubidium-potassium dual-species matter wave interferometer. We describe our apparatus and detail challenges and solutions relevant when operating a potassium interferometer, as well ...
Albers, H., Ertmer, W., Hartwig, J., Heine, H., Herbst, A., Herrmann, S., Lämmerzahl, C., Nath, D., Rasel, E. M., Richardson, L. L., Schlippert, D., Schubert, C., Vogt, C., Woltmann, M.   +13 more
core   +3 more sources

Precision Selenodesy via Differential Interferometry [PDF]

Science, 1973
Review of the first results obtained from the development and use of a new type of differential receiver designed to determine the relative locations on the lunar surface of two Apollo-deposited transmitters. This receiver has made it possible to reduce random and systematic instrumental errors to nearly negligible levels (displacement uncertainties ...
C C, Counselman, H F, Hinteregger, R W, King, I I, Shapiro   +3 more
openaire   +2 more sources

High-Quality Pixel Selection Applied for Natural Scenes in GB-SAR Interferometry

Remote Sensing, 2021
Phase analysis based on high-quality pixel (HQP) is crucial to ensure the measurement accuracy of ground-based SAR (GB-SAR). The amplitude dispersion (ADI) criterion has been widely applied to identify pixels with high amplitude stability, i.e ...
Yunkai Deng, Weiming Tian, Ting Xiao, Cheng Hu, Hong Yang   +4 more
doaj   +1 more source

Analysis of Focused Laser Differential Interferometry [PDF]

31st AIAA Aerodynamic Measurement Technology and Ground Testing Conference, 2015
A computational method for predicting the output of a focused laser differential interferometer (FLDI) given an arbitrary density field is presented. The method is verified against analytical predictions and experimental data. The FLDI simulation software is applied to the problem of measuring Mack-mode wave packets in a hypervelocity boundary layer on
Schmidt, B. E., Shepherd, J. E.
openaire   +4 more sources

On the RFI Detection in Differential Interferometric Synthetic Aperture Radar [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Synthetic Aperture Radar (SAR) can image the ground with a wide area and high resolution at all times and in all weather and has become an important means of remote sensing.
Y. Liu, M. Tao, J. Li, T. Li, J. Chen
doaj   +1 more source

Glacier motion estimation using SAR offset-tracking procedures [PDF]

, 2002
Two image-to-image patch offset techniques for estimating feature motion between satellite synthetic aperture radar (SAR) images are discussed. Intensity tracking, based on patch intensity cross-correlation optimization, and coherence tracking, based on
Luckman, A., Murray, T., Strozzi, T., Wegmuller, U., Werner, C.L.   +4 more
core   +1 more source

A NOVEL PROPOSAL OF GAOFEN-3 SATELLITE CONSTELLATION FOR MULTI-APPLICATIONS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Gaofen-3 is the first C-band fully polarimetric SAR satellite in China, which is widely used in various fields such as ocean monitoring, disaster reduction and so on. In this paper, a new satellite constellation is proposed based on the orbit of Gaofen-3
X. Qiu, X. Qiu, X. Qiu, C. Ding, C. Ding, C. Ding, B. Lei, B. Lei, B. Han, B. Han, F. Li, F. Li   +11 more
doaj   +1 more source

Accuracy verification methods and experimental study of ground-based real aperture radar

矿业科学学报, 2021
Conventional deformation monitoring means are limited by data accuracy, monitoring range, applicable environment and other factors, which seriously restrict the early warning and forecasting of landslide and collapse disasters.The microwave remote ...
Zhang Hao, Yang Xiaolin, Yang Feng, Zhang Batu, Yu Zhengxing, Ma Haitao   +5 more
doaj   +1 more source

Editorial for the Special Issue “Urban Deformation Monitoring using Persistent Scatterer Interferometry and SAR Tomography”

Remote Sensing, 2019
This Special Issue hosts papers related to deformation monitoring in urban areas based on two main techniques: Persistent Scatterer Interferometry (PSI) and Synthetic Aperture Radar (SAR) Tomography (TomoSAR).
Alessandra Budillon, Michele Crosetto, Oriol Monserrat   +2 more
doaj   +1 more source

Crop Growth Monitoring with Drone-Borne DInSAR

Remote Sensing, 2020
Accurate, high-resolution maps of for crop growth monitoring are strongly needed by precision agriculture. The information source for such maps has been supplied by satellite-borne radars and optical sensors, and airborne and drone-borne optical sensors.
Gian Oré, Marlon S. Alcântara, Juliana A. Góes, Luciano P. Oliveira, Jhonnatan Yepes, Bárbara Teruel, Valquíria Castro, Leonardo S. Bins, Felicio Castro, Dieter Luebeck, Laila F. Moreira, Lucas H. Gabrielli, Hugo E. Hernandez-Figueroa   +12 more
doaj   +1 more source