Question

Disadvantages of geographical instruments

Answer 1

Remote sensing is a fairly expensive method of analysis especially when measuring or analyzing smaller areas.Remote sensing requires a special kind of training to analyze the images. It is therefore expensive in the long run to use remote sensing technology since extra training must be accorded to the users of the technology.It is expensive to analyze repetitive photographs if there is need to analyze different aspects of the photography features.It is humans who select what sensor needs to be used to collect the data, specify the resolution of the data and calibration of the sensor, select the platform that will carry the sensor and determine when the data will be collected. Because of this, it is easier to introduce human error in this kind of analysis.Powerful active remote sensing systems such as radars that emit their own electromagnetic radiation can be intrusive and affect the phenomenon being investigated.The instruments used in remote sensing may sometimes be un-calibrated which may lead to un-calibrated remote sensing data.Sometimes different phenomena being analyzed may look the same during measurement which may lead to classification error.