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2 years ago

Devise an experiment using a Landsat satellite and hypothesize results.

Physics

1 answer:

guapka [62]2 years ago

8 0

An experiment that involves using a Landsat satellite is given below;

Paddy lands detection through the use of Landsat-8 satellite images and object-based classification in cape town, South Africa.

<h3>What is the experiment about?</h3>

Rice is known to be one of the most vital food staples in a lot of countries, especially South Africa . Due to the irrigated rice production that tend to differs from other kinds of agricultural fields, this study was said to have created a paddy field mapping model via the use of phenological aspects, a lot of satellite sensor data, and also the use of object-based approach.

This study uses the phonological features of rice plants and also the use of an annual data regarding surface temperature (LST) to make the paddy map.

The core remote sensing data is made up of the yearly LST that is obtained from MODIS and multi-temporal Landsat-8 satellite imagery.

Based on the study, the total accuracy and kappa coefficient for the pixel-based classification method is seen to be 92% and 0.89.

Hence, An experiment that involves using a Landsat satellite is Paddy lands detection through the use of Landsat-8 satellite images and object-based classification in cape town, South Africa.

Learn more about Landsat satellite from

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Answer:

Explanation:

An information contains

25Hz and 75Hz sine wave

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The analogy signal are generally

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y1(t)=Asin(2πx/λ - 50πt)

Similarly

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Using Nyquist theorem

Nyquist Theorem states that in order to adequately reproduce a signal it should be periodically sampled at a rate that is 2 times the highest frequency you wish to record.

From sampling

f(nyquist)=f(sample)/2

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f(nyquist)=250Hz

From signal

The highest frequency is 150Hz

F(nyquist) = 2×F(highest)

f(nyquist)= 2×150

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Sample per frequency Ns is given as

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So signal below 300Hz reproduced without aliasing.

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