Low-cost perimeter security radar system

Radar systems are needed for various reasons. Perimeter security was previously provided by people constantly watching with binoculars or cameras. This attempting to personally ensure security environment has brought some negative aspects such as security weakness. With the development of modern technology such negativities began to disappear. With the use of radar systems in the military and civilian fields, it started to give humanity a sigh of relief. But the fact that perimeter security radar systems can be provided at a very expensive cost has continued people's search. The purpose of this thesis study is to develop a low-cost pulse radar system with suitable range. In this thesis study, the theoretical part of radar systems has been explained and the working principle of conventional pulse radars has been emphasized. In addition to this, carrier pulse signals are examined in time and frequency domains. In this thesis, low-cost radar system design is focused on using HB100 X-Band microwave motion sensor, low noise block converter and analog satellite finder. HB100 sensor, low noise block converter and analog satellite finder are cheap components that are used in daily life and that we can easily access. HB100 X-Band motion sensor is used for carrier signal generator. This sensor is modulated with the function generator and the pulse signal is obtained. The response of the system has been observed by changing the pulse repetition frequency and pulse interval of this carrier signal as desired. Low noise block converter, used on front of the satellite antenna, and analog satellite finder are used in the receiver. The analog satellite finder, which is used as a power detector, is used to correctly position the direction of TV satellite antennas in daily life. By observing the received signal on the oscilloscope, it has been revealed that the developped radar system has a serious potential for the target detection.