A Brief Introduction to Kalman Filters - KDnuggets

Can you measure the temperature inside the core of a nuclear reactor to make sure the nuclear reaction is controlled? It certainly is too hot for any thermostat manufactured to date. The closest one can go is to measure the temperature of a surface close to the core and estimate the temperature inside it. Let us consider another example to internalize this concept where direct measurement of a phenomenon is not possible – can you measure the exact position of a flying object using radar technology considering variable air density, wind direction, and wind speed? What if the wind changed direction?