Overlapping-based Radio Signal Processing for SDF Location Method

The localization of radio emitters is commonly used in the positioning of nodes, e.g., cellular network, radio navigation, search and rescue operations, as well as in military applications such as blue force tracking (i.e., positioning of own troops), communication (COMINT) or electronic intelligence (ELINT), and electronic warfare. Depending on the location technique used, different signal processing methods are used. In this paper, we present an efficient and adaptive signal processing method for the signal Doppler frequency (SDF) location method. This method is based on the variability of the Doppler curve, the shape of which is distinctive for the mutual position of the transmitter in relation to the receiver trajectory or vice versa. The proposed approach is based on an overlap technique that enables obtaining the desired number of Doppler frequency shifts for the SDF. The effectiveness of this solution is presented on the example of signals recorded in a real environment. The proposed method could be used in signal processing in real-time SDF applications as well as in simulation studies.