Overview of radar digital circuit fault detection technology

The demand for weapons and equipment life cycle management has promoted the research and development of radar fault prediction and health management (PHM) technology, and radar has also evolved from ex post maintenance to condition Based maintenance (CBM). With the continuous development of information technology, digital circuits, with their excellent reliability and stability, account for more and more in radar. The Ball Grid Array (BGA) encapsulated Field Programmable Gate Array (FPGA) chip's solder joint failure is difficult to detect directly, and the failure of the FPGA's solder joint can cause serious damage to the radar. In view of this situation, this paper introduces several methods and principles of solder joint fault detection, and expounds its advantages and disadvantages.