Because the phase information is quite difficult to be utilized [5], we propose a new waveform cross entropy based detector using the amplitude HRRP to detect the manoeuvring range spread targets.
The range-spread target is a metallic pistol model whose length is 14 cm, as shown in Fig. 1.
For a range-spread target in high-speed manoeuvring flight, each scatterer of the target has generally a large Doppler shift.
M range profiles of the range-spread target and M range profiles of clutter are synthesized into M radar echo pulses.
In this paper, combining adaptive normalized matched filter with sliding high-order cross-correlation integration, a new adaptive range-spread target detector is proposed.
We assume that DTRN consists of 3 terahertz radars and that the DTRN observes the same range-spread target from different radar views.
where K 0 is the starting position in which the range-spread target is embedded in the clutter pulse, j=1,2,⋯,M denotes the jth pulse.
The range profiles of the range-spread target are extracted from these M range profiles, and each of them is normalized.
Range-spread target detection is based upon the received complex data matrix composed by the complex HRRPs collected from a train of coherent pulses.
As shown in Fig. 6, the lengths of the range-spread target in different radar views are estimated by the maximal SCR rule and the estimation values are 31, 16, and 33, respectively.
