The simple formulas for range estimation of the attacking aircraft and missiles were derived from the angle of accomplishing threat degree ordering by means of combination of IR radiation variation and kinematics.
姜宏滨.舰载红外警戒系统中的距离估算[J].红外与毫米波学报,1999,18(6):438~442]. JIANG Hong Bin. RANGE ESTIMATION IN SHIPBORNE IRST SYSTEMS[J]. J. Infrared Millim. Waves,1999,18(6):438~442.]