As new concept radar combing quantum technology with radar technology, quantum radar is an extension of traditional radar theory and has the potential to break through the limit of conventional radar detection performance. We study quantum radar optimum decision strategies for various signal and background forms and compare them with traditional photon‐counting strategies. Quantum optimum strategy gives better detection probability with fixed false‐alarm probability, thus reducing needed signal strength to detect the target, but its validity strongly depends on exact knowledge of signal forms. We briefly discuss the influence of deviating signal amplitudes and phases, and find that in the condition that the false‐alarm probability is very small quantum optimum strategy is still useful when the signal form varies in a small region.
As new concept radar combing quantum technology with radar technology, quantum radar is an extension of traditional radar theory and has the potential to break through the limit of conventional radar detection performance. We study quantum radar optimum decision strategies for various signal and background forms and compare them with traditional photon‐counting strategies. Quantum optimum strategy gives better detection probability with fixed false‐alarm probability, thus reducing needed signal strength to detect the target, but its validity strongly depends on exact knowledge of signal forms. We briefly discuss the influence of deviating signal amplitudes and phases, and find that in the condition that the false‐alarm probability is very small quantum optimum strategy is still useful when the signal form varies in a small region.
This Paper examines novel approach the advancements in Q-dots based quantum radar technology, design considerations for its integration, and quantum radar cross section (QRCS) based on interferometric and quantum electrodynamics. In addition to performing standard target detection and recognition duties, quantum radar systems with quantum measurement assistance may also detect and identify RF stealth platforms and missile systems. In numerous fields of study, the advancement of radar technology is crucial. A quantum radar is a notion that has been developed that uses photon quantum states to gather information about a distant target. A single photon or a small group of photons is directed in the direction of the target. The target absorbs the photons, which are then re-emitted into the receiver. There are two possible approaches to carrying out the measurement procedure. An interferometric analysis can be performed.one can either count the number of photons that return or perform a measurement (or phase measurement) on the photon. Since the latter technique is called Quantum Illumination, the former is called Interferometric Quantum Radar. Entangled states or stationary quantum states of photons can be used for either of those techniques. Entangled states have been demonstrated to offer the best resolution enhancement, reaching the optimum situation. Compared to classical approaches, the advantage of adopting quantum states is that they show more degrees of correlation via which information can be obtained. These additional correlations, sometimes referred to as quantum correlations, increase the radar system's potential resolution and signal/noise ratio (SNR). Relationship research between the two photons is conducted in order to gather data. Coherent state quantum radar relies on coherent state photons and a quantum detection technique to overcome the diffraction limit. The design and operating concepts of quantum applied trends are also reviewed in this work.
Quantum radar is a promising remote sensor that exploits quantum phenomena to perceive target information.By introducing quantum strategy into transmitter or/and receiver,its accuracy breaks the standard quantum limit,but still follows the Heisenberg uncertainty relation.The acquisition,transmission and processing of information are promoted by quantum theory greatly.In this paper,the concept and princi-ple of quantum radar,including quantum interferometry,quantum ladar,quantum illumination,are intro-duced in detail,as well as the development,classification and performance.Finally,the technological essen-tials and development direction are discussed from an engineering perspective.
This paper presents the advantages and limitations of a quantum radar system. The use of entangled photons to interrogate a region of space where a target is supposed to be, gives a lower probability of error than using a classical signal. This is possible because of the extra information that the quantum entanglement property can give us. This information helps us to distinguish between the signal reflected from the target and the background noise. Finally, through simulations, it is shown that the actual advantage of the quantum radar is the ability to detect a target in a high-losses and high-noise environment using a weak signal.
This paper presents a study on quantum radar technology developments, design Consideration for its integration, and quantum radar cross-section, QRCS based on quantum electrodynamics and interferometric considerations. Quantum radar systems supported by quantum measurement can fulfill not only conventional target detection and recognition tasks but are also capable of detecting and identifying the RF stealth platform and weapons systems. The development of radar technology is of the utmost importance in many avenues of research. The concept of a quantum radar has been proposed which utilizes quantum states of photons to establish information on a target at a distance. A photon, or a little cluster of photons, is distributed towards the target. The photons are absorbed and reemitted from the target and into the receiver. The measurement process may be executed in two alternative ways. One can perform an interferometric measurement (or phase measurement) on the photon, or one can simply count the number of photons that return. the previous method is named Interferometric Quantum Radar, and therefore the latter method is termed Quantum Illumination. For either of those methods, one can use stationary quantum states of photons or use entangled states. Its been shown that entangled states provide the most effective possible boost in resolution, achieving within the ideal case. The benefit of using quantum states is that they exhibit extra degrees of correlation by which to get information compared to classical methods. These extra correlations (called quantum correlations) serve to boost the resolution and signal/noise (SNR) that may be achieved within the radar system.
Quantum radar is an emerging technique, currently at the experimental stage, that promises to disrupt the well-established field of conventional radar. Recent progress shows that it is possible to generate and use entangled pairs of microwave photons for detection purposes and to obtain an advantage over a classical radar. In this work, we study the currently experimentally feasible type of quantum correlation radar. To this end, we compare different radar architectures, quantum and classical, by analyzing their detection performances by means of the receiver operating characteristic (ROC), the minimum error probability as well as the Chernoff bound. The underlying system models are based on quantum mechanical formulations as well as conventional signal theory. Where it is appropriate and necessary to facilitate our analysis, we apply the central limit theorem to establish the Gaussianity of the observable quantities. A conceptual analogy between the quantum and classic points-of-view is drawn and supported by results showing the asymptotic behavior of the ROC curves of both physical descriptions depending on the power levels of signal and noise. We come to exact and comprehensible conclusions on the current state of quantum radar in comparison to classic radar with a detailed mapping of the radar operating regime (measurement time, signal-to-noise ratio, environmental noise level, target object size and distance) in which a quantum advantage is attainable.
Quantum radar is a new detection technology based on the mechanism of quantum physics and is promising for enhancing radar target detection capability. In this letter, the quantum radar equation is established based on the traditional radar equation; meanwhile, how the quantum radar cross section (QRCS) influences target detection performance and how QRCSs for some typical targets distribute are investigated via simulations. Simulation results demonstrate that the signal-to-noise ratio increases with the QRCS, the peak values of side-lobes of the QRCS for the cylinder surface fluctuate little, and the QRCS for corner reflectors almost exhibits no variations in a wide range of incident angles. The results listed above can benefit the signal design and performance evaluation of quantum radar as well as the design of quantum stealthy targets.