A stealth target detection device and method

Abstract

The invention discloses a stealth target detecting device and method. The method comprises the steps that a pure-state entangled quantum cluster is prepared; a known quantum state is modulated, bell-state measurement is conducted on the known quantum state and one quantum in the pure-state entangled quantum cluster, at this point, other quanta change into collapsed quantum states, and a classicalinformation piece is obtained; an arbitrary quantum of the collapsed quantum states is emitted into a target airspace, decoherence happens to the detection quantum, U-transformation is conducted on one quantum of other collapsed quantum states and the classical information piece, an obtained state is not known quantum states, and according to emission time of the probe quantum and U-transformationtime, the speed and orientation of a stealth target are calculated. According to the device and the method, based on the characteristic that decoherence is caused to the entangled-state quantum due to environmental interference, detection of the stealth target is achieved; the better the performance of a target microwave absorbing material and a target plasma shielding material is, the higher thedetection precision is; the problem is solved that backward signals of traditional quantum radars get weaker when the performance of the microwave absorbing material and the plasma shielding materialis improved continuously, so that the detection distance keeps getting shorter.

Description

technical field [0001] The invention relates to target detection technology, in particular to a stealth target detection device and method. Background technique [0002] The essence of radar is ranging, which is divided into active radar and passive radar. For various active radars, it can locate various position parameters of the detected target by processing the known electromagnetic parameters emitted by itself and receiving the electromagnetic waves reflected from the target. Passive radar does not emit electromagnetic waves, it uses direction finding and time difference positioning technology for target detection, positioning and identification. [0003] Stealth technology is a technology with low detectability. At present, stealth technologies mainly include radar stealth, infrared stealth, visible light stealth, acoustic wave stealth, plasma masking, etc., by reducing detectable and identifiable signals, it is difficult to be discovered; stealth technology can make ...

AI Technical Summary

Problems solved by technology

[0009] (1) An active radar system must be used, relying on the reflected signal of the target, and using the received reflected signal to achieve positioning and identification; and the active radar may be reversed and then used anti-radiation missiles to effectively destroy it, and its own survival capacity at risk

[0010] (2) This kind of traditional quantum radar relies on the quantum reflected by the target back to the radar to perform correlation calculations, so as to realize the detection and positioning of stealth targets. ), the reflected signal will become weaker and weaker, reducing the maximum distance for detecting stealth targets, and the ability to distinguish the size and attributes of targets will be severely weakened

[0011] (3) Traditional quantum radar relies on the quantum reflected back to the radar to perform correlation calculations. The signal is transmitted and reflected back to the radar. It needs to pass through the atmosphere twice, and the signal attenuation and interference are serious.

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