Which polarisation in microwave C-band is most valuable for observing soil moisture change?

05 June 2016 839 4 View

Remote calculations using ESA data products - which tools should I use?

04 May 2016 1,320 2 View

Disaggregation using linear dependence of radar backscatter change on soil moisture change - do you have any software recommendations?

I'm going to apply disaggregation algorithm described in the linked article. I'm going to use Sentinel-1 data as the high resolution data source. I thought about implementing mentioned algorithm...

04 May 2016 3,046 2 View

Is averaging of remote sensing data a source of the systematic bias?

Some of the remote sensing products are averages (or more precisely "composites", because they're not simple averages) of the instantaneous values for the satellite fly over time. An example of...

02 March 2016 5,900 2 View

Drought index SPEI why different time scale products have values for each month?

According to http://sac.csic.es/spei/home.html to calculate SPEI we use precipitation and potential evapotranspiration (PET): "the difference between the precipitation (P) and PET for the month i...

01 February 2016 5,077 6 View

Will cross-correlation between near surface and subsurface soil moisture be the same for different products?

Once precipitation fall into surface it affects surface soil moisture and after infiltration occurs, subsurface SM. Thus, I assume that both layers are always correlated, but with some shifts in...

31 December 2015 1,933 4 View

How does surface soil moisture change with depth?

In most (many?) articles dedicated to validate surface soil moisture products from ASCAT, SMOS or SMAP, authors compares SM estimates against in-situ measurement on fixed depth (for example 5 cm)....

07 August 2015 9,974 22 View

What is Integerized Sinusoidal (ISIN) projection?

Dear Researchers, I need to download LAI data set and transform it to the WGS84 (EPSG:4326). I found following resource:http://glcf.umd.edu/data/lai/ As I can see in the description, following...

03 April 2015 5,242 5 View

Are there any GLDAS database counterparts / equivalents?

Global Land Data Assimilation System (GLDAS) provides public access to the results of global-scale modelling using four land surface models (LSMs). GLDAS provides information about land surface...

01 January 1970 3,270 2 View

Are there any studies that use lagged remote sensing measurements of near-surface soil moisture for flood and/or drought monitoring?

In the literature, lagged measurements of near-surface SM in microwave band are related with root-zone soil moisture. Thus, I wonder if there are studies that relates them (lagged SM) with drought...

01 January 1970 1,933 3 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

Open Source IoT Simulators supported by Machine Learning?

Dear Research Gaters, Let me first add context to the question. I am looking to simulate the waste management system and resources of a city. The hardware devices I need to simulate include,...

21 February 2021 2,333 4 View

What type of pressure sensor are usually used in microfluidics?

My team is designing a dual channel microfluidic chip that runs air and water. I think we've decided on the NE1000 syringe pump for it's versatility and feedback control. We will be ordering the...

18 February 2021 9,928 2 View

How to realize refractive index values of 1 to 1.1?

Hello researchers! While studying the literature on refractive index sensors, most of the articles simulate their devices with a refractive index ranging from 1 to 1.1, with small steps in...

17 February 2021 1,578 4 View

What should a smart water system look like?

Our team is designing a smart water C&C dashboard for a smart city initiative. As we look into the current smart water system landscape, we couldn't reconcile to a definitive solution that...

16 February 2021 1,094 3 View

Receiving very less number of hits and events in acoustic emission tests?

I am doing a three point bend test with concrete specimen of dimension 280mm*90mm*90mm. I am putting 2 sensors near the notch with 3cms away from both the sides. the experiment ran for 20 mins but...

13 February 2021 2,990 1 View

How to increase coupling range (distance between reader and sensor coils) in LC resonance circuit?

Hello great researchers, I am working on a wireless pressure monitoring project where sensing part is actually an LC resonance sensor and I am using a planar coil as a reader to get wireless...

11 February 2021 4,148 5 View

I am looking for a microbend optical sensor design...can anyone please provide me some idea about it??

I am working on a landslide model...i need an optical sensor to determine the amount of pore pressure and other values..i am thinking of using a microbend sensor. Can anyone please provide me with...

11 February 2021 5,911 2 View

How to eliminate noise when using a sensor with instrumentation amplifier and giving it's output to Arduino?

When I am trying to implement a pressure sensor through instrumentation amplifier and then giving it's output to Arduino, I am getting garbage value due to noise, so how to eliminate it.

05 February 2021 8,598 11 View

Comparing Uniaxial accelerometer sensors activity counts with Triaxial accelerometer (IMU)'s activity counts?

Hi I have to compare the uniaxial sensor(wearable) data with Triaxial sensor data(IMU). The uniaxial sensor output has a single column of activity counts whereas Triaxial sensor(IMU) has three...

05 February 2021 3,999 1 View