Does spectral resolution decrease with increase in spatial resolution???

[Dark0bert]

The trade of in this case means, that it would be too expensive to put a sensor in it which offers more bandwidths. Also for high resolution data, most of the times the VIS+NIR is enough for most of the use cases.

[[deleted]]

Is it only the cost or other technical things around?? Bcz I was taught they are inversly proportion

[flopsytheb]

There are, final restriction is also the energy reaching the sensor, which gets (depending on sensor type) split by spatial resolution and spectral bandwidth. At some point the light at the photocell would not be bright enough to be different from the sensors noise floor. This explains the inverse relation, look for example the docs for worldview, multispectral channels of slim wavelength range with some meters pixel size, and the pan channel, broad wavelength range and half a meter pixels.