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能在深水工作的新一代变深声呐正在替代传统的前视舰壳猎雷声呐.由于现有的舰壳声呐受倾角的影响(严格地说它们下视的距离不够深),因此只能在浅水区域工作.而变深声呐至少在某种程度上可克服这一不足,但它们的工作要受所谓的“后拖”现象的连累,也就是说,当速度加快及声呐的工作深度加深时,拖体相对舰艇而言就会向后运动.虽然加大声呐的探测和识别距离多少会补偿这一现象,但距离增大意味着频率要降低,看来要做到这一点只能加大声阵或降低分辨率.
A new generation of deep-sea sonar, capable of working in deep water, is replacing the traditional front-of-shell mine booming sonar. Due to the obliquity of the existing hull sonars (strictly speaking, they are not deep enough downwards) Shallow waters, and deeper sonar can overcome this deficiency, at least to some extent, but their work is subject to so-called “after-drag” phenomena, which means that as the speed increases and the depth of the sonar’s work deepens , The tow body will move backwards relative to the warship.Although it is compensated by increasing the detection and recognition distance of the sonar, the increase of the distance means that the frequency should be reduced, and it seems that this can only be done by increasing the sound Array or reduce the resolution.