Evaluation of the suitability of arable fields for field trials by means of remote sensing

G. W. A. M. van der Heijden; J. G. P. W. Clevers; D. L. C. Brinkhorst-van der Swan

doi:10.1007/bf00021586

Results of Field Trials of Realsens™, An Airborne Natural Gas Leak Detection Technology

2008 7th International Pipeline Conference, Volume 2 ◽

10.1115/ipc2008-64647 ◽

2008 ◽

Cited By ~ 1

Author(s):

Adrian Banica ◽

Doug Miller ◽

Boyd T. Tolton

Keyword(s):

Remote Sensing ◽

Natural Gas ◽

Near Infrared ◽

New Technology ◽

Field Tests ◽

Field Trials ◽

Infrared Band ◽

Detection Technology ◽

Gas Leak ◽

Gas Leaks

Detecting natural gas leaks from the worlds nearly 5 million kilometers of underground pipelines is a difficult and costly challenge. Existing technologies are limited to ground deployment and have a number of limitations such as slow response, false leak readings and high costs. Various remote sensing solutions have been proposed in the past and a few are currently being developed. This paper starts by describing the remote sensing concept and then will focus on a new technology developed by Synodon scientists. This airborne instrument is a passive Gas Filter Correlation Radiometer (GFCR) that is tuned to measure ethane in the 3.3 microns near-infrared band. The paper will then present the results of the first airborne field tests and conclude with a description of the service which Synodon will be offering to the transmission and distribution pipeline operators using the new technology.

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Emission Determination by Three Remote Sensing Methods in Two Release Trials

Atmosphere ◽

10.3390/atmos13010053 ◽

2021 ◽

Vol 13 (1) ◽

pp. 53

Author(s):

Imke Elpelt-Wessel ◽

Martin Reiser ◽

Daniel Morrison ◽

Martin Kranert

Keyword(s):

Remote Sensing ◽

Linear Measurement ◽

Field Trials ◽

Tunable Diode Laser ◽

Emission Rates ◽

Concentration Data ◽

Ch4 Emissions ◽

Inverse Dispersion ◽

Carbon Dioxide Co2 ◽

Remote Sensing Methods

Concentrations of greenhouse gases such as carbon dioxide (CO2), nitrous dioxide (N2O) and methane (CH4) in the atmosphere are rising continuously. The first step to reduce emissions from landfills is to gain better knowledge about the quantities emitted. There are several ways to quantify CH4 emissions at landfills. Comprehensive quality analyses of individual methods for emission rate quantification at landfills are few to date. In the present paper, the authors conducted two field trials with three different remote sensing methods to gain more knowledge about the possibilities and challenges in quantification of CH4 emissions from landfills. One release trial was conducted with released N2O as tracer and CH4 for quality assessment of the methods. In the second trial, the N2O tracer was released on a landfill to gain experience under field conditions. The well-established inverse dispersion modelling method (IDMM) was used based on concentration data of TDLAS (Tunable Diode Laser Absorption Spectroscopy)-instruments and on concentration data of a partly drone based Fourier-Transformation-Infrared-Spectroscopy (FTIR)-instrument. Additionally, a tracer-method with N2O-tracer and FTIR measurements was conducted. In both trials, IDMM based on TDLAS data and FTIR data provided the best results for high emission rates (15% deviation) and low emission rates (47% deviation). However, both methods have advantages, depending on the field of application. IDMM based on TDLAS measurements is the best choice for long-term measurements over several hours with constant wind conditions (8% deviation). The IDMM based on drone based FTIR measurements is the means of choice for measurements under changing wind conditions and where no linear measurement distances are possible.

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Media Penginderaan Jauh Berbasis Android dalam Pembelajaran Geografi SMA

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan ◽

10.17977/jptpp.v4i7.12615 ◽

2019 ◽

Vol 4 (7) ◽

pp. 863

Author(s):

Falik Wardana ◽

Sugeng Utaya ◽

Syamsul Bachri

Keyword(s):

Remote Sensing ◽

Test Scores ◽

School Effectiveness ◽

Field Trials ◽

Instructional Media ◽

Comprehension Test

Abstract: This research aims to determine the effectiveness of instructional media on Remote Sensing. Research on this multimedia following the steps Borg and Gall are modified, then have seven steps as needed. The effectiveness of media views of testing of products and comprehension test. The results of field trials demonstrate the effectiveness of the product amounted to 83.1% comprising the display aspect, materials, operations and language. In addition, the results of comprehension test by the students achieved a score with an average of 81.7 with a minimum completeness criteria 78. The level of school effectiveness and comprehension test scores can be categorized so effective that multimedia products eligible for use in learning.Abstrak: Penelitian ini bertujuan untuk mengetahui tingkat keefektifan media pembelajaran pada materi Penginderaan Jauh. Penelitian terhadap multimedia mengikuti langkah-langkah Borg & Gall yang dimodifikasi, kemudian dipilih tujuh langkah disesuaikan dengan kebutuhan. Tingkat keefektifan media dilihat dari uji coba produk dan tes pemahaman. Hasil uji coba lapangan menunjukkan tingkat keefektifan produk sebesar 83,1% yang terdiri dari aspek tampilan, materi, pengoperasian dan bahasa. Selain itu hasil tes pemahaman oleh siswa mencapai skor dengan rata-rata sebesar 81,7 dengan kriteria ketuntasan minimal sekolah 78. Tingkat kefektifan dan skor tes pemahaman tersebut dapat dikategorikan sangat efektif sehingga produk multimedia layak digunakan dalam pembelajaran.

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