Geomatics Engineering - Science topic

Addressing the effects caused by ecological differences, which result in different spectral values for the same or similar features. For instance, varying reflectance from the same species of eucalyptus across other areas of Ethiopia due to altitudinal and ecological characteristics occurs even when data is captured by the same sensor on the same date and during the same season, but from different scenes.

What does vertical datum refer to? Is it Mean Sea Level (MSL)? Is it a zero mark in the tide gauge? Is it some other height value than zero, far from the tide gauge? Is it one reference benchmark? Is it all the benchmarks in the levelling network? Is it the combination of all these?

Hello, I am considering to by a LIDAR + drone for vegetation studies. I am not an expert in active remote senisng/LIDAR sensors, but I do optical remote sensing.

I had a look to the DJI Matrice 300 with the Zemuse L1 LIDAR, but I cannot find any information regarding the number of points per square metre. I asked the supplier for my country, but he could not asnswer either.

Does anyone know this information, or any other dron portable lidar sensor suitable for forestry/agriculture studies?

Thanks

Right now I am studying GRAVSOFT for geoid modeling to use it in my thesis, I tried to read the manual but it was not explaining the GUI Python version (it is explaining the Fortran version), so that I am still confused to understand the software clearly. I would like to understand clearly which data I have to use for determination geoid modeling and the steps (step by step) of doing that using GRAVSOFT programs.

please provide me any documents or any files that can let me understand all the programs inside the GRAVSOFT interface specifically for creating geoid modeling.

Thanks in advance and your comments are appreciated

Given the two following patterns: the left or the right, which one is more beautiful than another?

What is space? Is it what is conceived by Newton or by Leibniz? Both Newtonian and Leibnizian views of space are framed under the mechanistic thinking of Descartes back to the 17th century. Christopher Alexander in his life's work - The Nature of Order conceived and developed a brilliant new view of space: space is neither lifeless nor neutral, but a living structure capable of being more living or less living. This new view of space has some far-reaching implications. It implies that we make space or our built environment better, smarter, or more sustainable, or more livable, or more resilient. More importantly, it implies that goodness of space is a matter of fact rather than an opinion. In this paper, we attempted to provide empirical evidence space indeed has different degree of beauty or life:

By asking this question, what I really wanted to know how long it will take for us to adopt Alexandrine view of space. Benoit Mandelbrot said Euclidean shapes are cold and dry, but nature, traditional buildings and artifacts are full of living structures, as noted by Christopher Alexander.

Do you have this geotechnical program?

I'm looking for some case studies (preferably newer ones) using Geomatics Engineering ( GIS is more favorable) in sustainable development. I'll be thankful if anybody can help me with some e-books, articles etc.

Regards,

We are pleased to invite You to the third conference in Geodesy, Geomatics and Engineering, which will take place at Gdańsk University of Technology, Poland, on the 22-25 of June 2017. Our mission is to provide a highly acclaimed conference forum for researchers to contribute their research results.

BGC is organized by the Gdańsk University of Technology, Faculty of Civil & Environmental Engineering and the University of Warmia and Mazury in Olsztyn, Faculty of Geodesy, Geospatial & Civil Engineering and Poland (Gdansk) Section C Chapter IEEE.

The conference proceedings of the 2016 BALTIC GEODETIC CONGRESS (BGC GEOMATICS) are indexed in Web of Science: webofknowledge.com

BGC ORGANIZING COMMITTEE

Hello,

Just for contextualization my research is about an inter-row plantation guidance for precision agricultural application. The approach chosen goes throw the use of 2D point-cloud information from a LIDAR laser scanner and its posterior processing and filtering. The final result is a reference centered between the two row plantation, which will be used in the control algorithm. 

Lately, I am searching for related works, because I want to know the state of the art on the subject of interest, nevertheless I am not finding anything relevant. What I mean with anything relevant, is that all works found are about row crop guidance for small plants like, for example, soy crop, but my work is focused in bigger plants, like coffee, olive or citrus tree. 

From this I restate my question: How is the state of the art on inter-row plantation guidance for plants like trees cultivars? Any reference will be of great help.

Thanks

Least square adjusment programme

The ground tracks of a single satellite cross each other after a certain time. At the intersection of two ground tracks (called crossover) the altimeter system allows to observe the sea surface twice. If the sea surface would not change, the sea surface heights derived from measurements of both ground tracks should be identical. In reality, the difference of sea surface heights (the so called crossover differences) do not vanish due to errors of the orbital height

I have the data containing the GPS coordinates of the vessel across the Bay of Fundy and need to use the latitude and longitude to estimate the tidal heights at those points. I also need to plot these heights at the recorded time intervals.

Does anyone know how to find shape factor of a semicircle section.

I'm researching methods to transport horizontal and vertical coordinates of the surface plan for underground, in engineering works (tunnels). I know the methods of Weissbach, bobs (wires, optic and laser) and use of deTaylor-Hobson spheres, is there any additional methods? And what about recommendations? Thanks in advance.

We have an Infragram Point & Shoot camera (a modified Mobius Action Camera whose low-pass filter was replaced by a red filter; http://publiclab.org/wiki/infragram-point-shoot). For this modified camera, the "B" channel should be NIR. So, the "R" channel should be "red+NIR" and the "G" channel should be "green+NIR". We took a photo of leaves together with a Labsphere white panel. From the DN values of the three channels, how to calculate the reflectance values of NIR, red and green regions, respectively? How to calculate NDVI from the photo? Many thanks!

Is there a program converted the EGM96 spherical harmonic coefficient set to their ellipsoidal harmonic coefficient counterpart?

I'm looking for a program to converted spherical harmonic coefficient (EGM96 or EGM2008) set to their ellipsoidal harmonic coefficient .

To develop this synthetic set of coefficients

Or how to get ellipsoidal harmonic coefficient of any EGM

Levelling, misclosure, total length.

I am looking for the best way to extract information on settlement areas using only Landsat 8.

I have read that NDBI is not as accurate because of some noise from vegetation and soil. The IBI technique also seems rather long.

Where do you classify engineering surveying, for instance?