Performance analysis of measurement methods for interference quantum radar

Liu, Kang, Xiao Xiao +3 more

Marco O. Lanzagorta

One of the major scientific thrusts from recent years has been to try to harness quantum phenomena to dramatically increase the performance of a wide variety of classical information processing devices. These advances in quantum information science have had a considerable impact on the development of standoff sensors such as quantum radar. In this paper we analyze the theoretical performance of low-brightness quantum radar that uses entangled photon states. We use the detection error probability as a measure of sensing performance and the interception error probability as a measure of stealthiness. We compare the performance of quantum radar against a coherent light sensor (such as lidar) and classical radar. In particular, we restrict our analysis to the performance of low-brightness standoff sensors operating in a noisy environment. We show that, compared to the two classical standoff sensing devices, quantum radar is stealthier, more resilient to jamming, and more accurate for the detection of low reflectivity targets.

AHMAD SALMANOGHLI KHIAVI

Deepak Vats, Vishal Srivastava, Vasudev Grover

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.

Naixuan Wei, Shitao Zhu

In the traditional radar, radar cross section (RCS) is used to represent the echo intensity that the target scattered. The modulation signals are used in the traditional radar systems to detect the targets based on principle of induced radiation, which makes the targets with geometric shape stealth design hard to detect. Quantum radar systems employ photons to detect targets. The processes of absorption and emission of photons follows the rules of quantum electrodynamics. The quantum scattering is not sensitive to the shape design of the targets, which can be used to enhance detection capability of radar system. Quantum radar cross section (QRCS) is used to analyze the performance of quantum radars. A computation method of QRCS based on spatial correlation is proposed in this paper to improve the performance of the quantum radar system. Multiple detectors are used to collect the quantum scattering signals of the target. The spatial correlation characteristics of scattered signals are extracted to represent the quantum scattering characteristics of the target. The randomness of atom-photon scattering process is efficiently used in this method, which can enhance detection capability of radar system. The method proposed in this paper is verified by numerical simulation. In addition, the multiphoton scattering of a typical three-dimensional target is studied in this paper. The results show that quantum radar with multiphoton as transmitting signal may have better detection capability. These results are of great significance to further study the quantum scattering characteristics of complex targets. The research of quantum radar system based on spatial correlation detection is a potential research direction especially for the stealth target detection.

Sourav Banerjee, Neel Kanth Kundu

Rydberg atom-based RF sensors offer distinct advantages over conventional dipole antennas for electric field detection. This paper presents a system model and performance analysis of a Rydberg atom-based quantum radar, which employs optical readout via lasers and photon detectors instead of circuit-based receivers. We derive the signal-to-noise ratio (SNR), compare it with classical radar, and estimate Doppler frequency using an invariant function-based method. Simulations show that the quantum radar achieves higher SNR and lower RMSE in velocity estimation than conventional radar.