Abstract
Target identification is a challenging task under land backgrounds for the millimeter wave (MMW) seeker, especially under complex backgrounds. Focusing on the problem, an effective method combining correlation matching and beam pointing is proposed in this paper. In the beginning, seeker scanning for target detection is conducted in two rounds, and target information of the detected targets is stored for correlation matching. Point or body feature judgment is implemented by using high resolution range profile (HRRP). Then, the error distribution zone is constructed with the beam pointing as the origin. In the end, we identify the target by searching the one which lies in the closest error distribution from the beam pointing center. The effectiveness of the proposed method is verified by using mooring test-fly and real flight data.
Highlights
The millimeter wave (MMW) seeker [1,2,3] is capable of working under all weather conditions, day and night, and has attracted increasing popularity
Mooring test-fly data and real flight data were used to verify the effectiveness of the proposed method
Seeker, especially under complex conditions, an effective method taking the unstable body or point feature characteristic of the clutters into account is presented in this paper
Summary
The millimeter wave (MMW) seeker [1,2,3] is capable of working under all weather conditions, day and night, and has attracted increasing popularity. Through massive data of mooring test-fly experiments and real flight experiments, we have found that the most explicit characteristics of the land clutters are unstable Said another way, for any clutter, its point feature or body feature for the seeker detection is not certain. The clutter appears a fluctuating characteristic, or its property is quite sensitive to external conditions This unstable body or point feature of the clutters is helpful for target identification of the MMW seeker, since the point or body feature of the interested target is usually quite stable. The proposed method can realize satisfying target identification under complex land backgrounds, which provides further support for target tracking and precise attack for the MMW guidance missile
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