01 January 1970 0 2K Report

I'm looking for a formal definition of SMOS snapshot (I guess that it might apply to other missions as well).

Intuitively, I understand it as a one image taken by the mission sensor (MIRAS in case of the SMOS) in one second,

More Mateusz Andrzej Kȩdzior's questions See All
Which polarisation in microwave C-band is most valuable for observing soil moisture change?

I'm searching for the articles which helps to answer the question: which polarisation is most valuable for tracking soil moisture changes? I found information for 9.0 Ghz (link to this question),...

05 June 2016 925 4 View

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

I need to calculate the difference raster (between day X and (X + 3 days) ) for the following ESA products: Sentinel 1 radar: Sentinel_diff SMOS L3 (or L2): SMOS_diff Having them, I wish to...

04 May 2016 1,417 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 3,133 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 5,978 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 5,155 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 2,015 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 10,103 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 5,398 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 3,363 2 View

Are there any articles that analyses QC (Quality Control flags) in L-Band?

I'm aware of work Lee and Im 2015 (linked below) dedicated for bias correction in Africa.However, I wonder if there're more works that analyses QC flags in L-Band for global areas (or at least...

01 January 1970 7,729 0 View

Similar questions and discussions
Hello all, Looking for international reviewer to review Ph.D thesis in wireless sensor network.Can anybody help?

My name is Apurva Saoji. I am a Ph.D scholar  in Computer engineering in India. I am looking for international expert in reviewing my PhD thesis, "Competitive Optimization Techniques to Minimize...

07 August 2024 4,600 2 View

Any direct measurement to measure the bacteria or micro organism using IOT or any indirect measurement?

need of sensor details or sensor development for this question.

28 July 2024 4,539 3 View

Hellow every one i have a question, please help me. How ESP car working?

I try to understand the ESP mechanism working. What kind of sensors it has, Is it necessary to modify or boost its mechanical ?

15 July 2024 4,772 1 View

What do you think are the key challenges that need to be addressed in the future development and application of these three devices?

Continuous glucose monitors (CGMs) help patients and doctors make more timely management decisions by monitoring blood glucose levels in real time. An insulin pump provides continuous insulin...

07 July 2024 7,742 0 View

How to reduce the material coming out of the torque rheometer?

A physical mix was in vitro evaluated on a torque rheometer. The composition was predominantly recycled polypropylene (PP), yet the melt flow index (MFI) was found to be excessively high....

25 June 2024 10,154 0 View

If someone says IR sensors are the same as MX sensors, do you accept it?

Somebody has told me Ir sensors that I have used in my circuit, are the same as Mx sensors however they are different and their circuits can not be arranged similar but he does not accept. Is...

06 June 2024 9,117 4 View

Do you have any research or invent about IR sensors?

I want to record a analog circuit between control and power circuits as innovation. My control circuit is IR sensors with bulb size 10mm (its max current to support power circuit is 100m[A] DC)and...

05 June 2024 4,085 4 View

Is it possible to use pair of IR sensors for lighting staircase?

Pair of IR sensors have sender and receiver sensors but some one declares it is possible to use this sensors for lighting stair case however I have used them for automatic liquid dropper and hand...

05 June 2024 8,302 1 View

Which carbon dioxide sensors are the fastest and most precise?

Ideally less or equal to 1Hz measurement frequency and very fast reaction time, capable of measuring changes within 1vol% in a second or less.

05 June 2024 7,092 0 View

What is the difference between reaction and interaction?

What is the difference between reaction and interaction in chemistry? Would you please provide me with the details?

13 May 2024 2,524 6 View

Our partners will collect data and use cookies for ad personalization and measurement. Learn how we and our ad partner Google, collect and use data. Agree & close