Real-time detection and separation method of multiple moving objects by through-the-wall radar
A multi-moving target and wall-penetrating radar technology, which is applied in the field of separation and real-time detection of multiple moving targets by wall-penetrating radar, can solve problems such as difficult detection, submersion in them, and complex echo signal components, so as to improve work efficiency and implement The effect of high efficiency and simple method
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[0038] 1. Theoretical basis
[0039] as attachedfigure 1 As shown, the echo signal of the through-wall radar can be expressed as:
[0040] f r (t) = f d (t)+s r (t)+f c (t)+f n (t)+f w (t)(1)
[0041] where f r (t) is the echo signal of the wall radar, s r (t) is the moving target signal behind the wall, f d (t) is the direct coupled wave, f w (t) is the reflected wave from the wall, f c (t) is the background clutter signal, f n (t) is noise, and t represents continuous time. Among them, the moving target signal s behind the wall r (t) In addition to the real echo of the target, it also includes the multiple reflection echo of the target, as shown in the attached figure 2 As shown in the figure, t 1 -t 5 are the times when the corresponding reflected waves reach the receiving antenna, respectively.
[0042] The influence of the target's multiple reflection echoes on target detection is discussed theoretically below. For simplicity of analysis, the attached ...
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