Improvement of range resolution in passive bistatic radar using fm signals

In this thesis, it is tried to explain the principles of processing in two-way passive radar systems in a simple and conceptual way. Subsequently, the problem is detected in passive radar systems based on FM radio signals in the presence of interfering signals, including system noise, clutter (multi-path recurrent echoes), direct path signal, and received echo received from the target. In this thesis, the amplitude resolution for near-field targets is increased by the use of FM signals. A diagnostic algorithm that calculates the distance between two targets is proposed. The ultimate goal is to improve the resolution of the domain for near-term purposes. The amplitude resolution is inversely proportional to the signal bandwidth. Thus, with increasing bandwidth, amplitude resolution and targets closer are correctly detected. To ensure the correct operation of this algorithm, one, three, and seven FM channels are used to broadcast the signal to detect nearby targets.