抄録
The timely detection and identification of an enemy's radar signal is critical to the success of an electronic countermeasure (ECM) mission. ln 1995, a project was initiated using Taguchi methods to improve the threat detection and identification capability of a generic electronic warfare (EW) swept superheterodyne (superhet) receiver. This receiver must demonstrate robust performance in a wide range of EW conditions. To optimize robustness, the performance characteristic selected for evaluation was the receiver's probability of detecting and identifying a random radar threat versus the elapsed time of the threat in a dynamic EW environment. The Taguchi experiment utilized a L18×L18 orthogonal array matrix, housing six (6) control factors and seven (7) noise factors. A computer simulator developed in 1994 was upgraded to perform the required matrix experiments. Results of this experiment identified optimum levels of control factors achieving minimum elapsed time of detecting and identifying radar threats,Computer simulations, using identified control factor levels, indicated that when operating in a signal environment with threat density varying between 250 thousand to 1.5 million pulses per second, the EW receiver demonstrated a 57% reduction of elapsed time for threat detection in comparison with the current baseline design.
