In this paper, the different ways to identify changes in remote sensing are given. Various authors have presented different methods of detecting changes on the Earth's surface. Detection of changes, among other things, are very important for tracking changes, as well as assessment and evaluation of changes and interrelations of natural and artificial objects. All this leads to better understanding of potential causes of change.

The paper presents problems of gravity units, the reference system for the acceleration of gravity, that is then gave a brief overview of the instruments that allow us the absolute determination of gravity, ie the determination of gravity in the full amount. Among many instruments available on the market today, absolute gravimeters FG5, FG5L and A10 are shown.

This paper presents an overview of the importance of periodic testing and calibration of geodetic measuring instruments by standard procedures in order to achieve the desired results. Special attention is placed on the standard procedures of testing and calibration of complex geodetic instruments for the GNSS measurements, which are in geodetic mass practice for some 20 years. Standard ISO test procedure for RTK instruments was presented in the paper, as well as method for testing the accuracy of receiver using the geodetic test network.

The main goal of GIS is to identify geografic coordiantes and attributes of stationary objects. That means that the uses of GIS are very much limited. So, there exists a need for a technology which will enable identification of objects if they are not stationary. RFID technology is the best example where this problem can be solved. Integrating GIS and RFID technologies we are able to follow and identify indoor or outdoor objects that are not stationary. RFID readers/writers are becoming cheaper just like it’s the case with other computer technologies. Today, some RFID devices can also process and transfer data to GIS servers. On the other side, development of GIS is becoming more affordable for the same reasons why RFID devices are cheaper. Therefore, if we enable GIS and RFID integration through internet, we can have all kinds of new possibilities which will solve industrial problems of todays and future.

This paper presents a Hannover method and its application in the deformation analysis. Hannover method determines the displacements of the geodetic network points, based on the geodetic measurements using the statistic methods. Application of determining unstable points displacements is shown in the example of microtriangulation network.