Low - Cost Perimeter Intrusion Radar System Development

In this paper, a very low-cost perimeter intrusion radar system is developed by using X-Band Microwave Motion Sensor Module called HB-100. When the 5-Volt input supply voltage of the sensor was modulated with a triangular wave, a 3 MHz difference in output frequency between 10525 - 10528 MHz was detected, which means that the sensor can be used as an FMCW radar and the distance information of the stationary target can be obtained. Besides, according to the specified characteristics of the sensor, calculated and simulated IF - range relationship is presented. The calculated and simulated values were confirmed by laboratory measurements and results graphics are presented. Civil application radars, which can detect people from distances of more than 1 kilometer, can be purchased with a very high budget. However, using the sensor's internal receiver and the designed external antenna lens, one kilometer away target can be detected at a much cheaper cost.