In this paper, in the complex electromagnetic environment of the battlefield, the real-time detection and processing process of ultra-wideband electronic signals requires more resources and more difficult conditions. A real-time ultra-wideband electronic signal detection algorithm based on FPGA is proposed. Through the engineering results, it can be seen that the key indicators such as frequency measurement accuracy and pulse width measurement accuracy are superior to system index requirements. Compared with traditional broadband digital receivers, the new ultra-wideband electronic signal detection technology has significantly improved in terms of resource utilization, real-time performance, measurement accuracy, and detection probability.