A Target Detection Method of Distributed Passive Radar without Direct-Path Signal

Zhu, Hongliang; Wang, Changlong; Wang, Lu

doi:10.3390/electronics12020433

Cited by 8 publications

(4 citation statements)

References 26 publications

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“…The subject of future research is the development of methods for suppressing a penetrating signal when using digital television (for example, [36,37]) and the development of methods for detecting aerial objects that are not equipped with an ADS-B or do not disable such a system.…”

Section: Discussionmentioning

confidence: 99%

The Methods for Improving the Quality of Detection of Inconspicuous Aerial Objects Through the Use of External Radiation Sources

Khudov¹,

Bashynskyi²,

Kovalenko³

et al. 2023

IJETAE

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The article focuses on the methods for improving the quality of detection of inconspicuous aerial objects through the use of external radiation sources. It has been established that the existing methods for improving the quality of detection of airborne objects do not meet modern requirements for detection indicators. The energy potential of modern radars is limited. Therefore, the article proposes detection methods that combine active radar and nontraditional principles for detecting airborne objects. In the article, we will focus only on two main methods for improving the quality of detection of small airborne objects. This is the use of energy from digital television receivers (external radiation source) and the use of information from ADS-B receivers. Technically, this means introducing an additional receiving channel into the radar. The gain in the conditional probability of correct detection for bistatic signal reception (compared to monostatic) is due to the properties of the bistatic effective scattering surface. It is shown that with the additional use of digital television signals, the quality of detection of airborne objects is improved. It is shown that the additional use of information from the ADS-B receivers makes it possible to increase the accuracy of determining the coordinates of an air object up to 40-50%, depending on the parameters of the movement of an air object. The subject of advanced research is the development of methods for suppressing the penetrating signal when using digital television and the development of methods for detecting airborne objects not equipped with the ADS B system. Keywords— aerial object, detection, quality, third-party source, ADS-B, digital TV, radar

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Section: Discussionmentioning

confidence: 99%

The Methods for Improving the Quality of Detection of Inconspicuous Aerial Objects Through the Use of External Radiation Sources

Khudov¹,

Bashynskyi²,

Kovalenko³

et al. 2023

IJETAE

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show abstract

“…'illuminator of opportunity' [35]) for target detection in a quantum passive radar setup. Classical passive radar is an active area of radar research [36], and several classical hypothesis testing settings have been considered, including passive bistatic radar [36] and multistatic radar [37], multitarget passive radar [38], and passive radar with direct path interference [35,39].…”

Section: Gaussian Quantum Illumination With Coherent Statesmentioning

confidence: 99%

Not even 6 dB: Gaussian quantum illumination in thermal background

Volkoff

2024

J. Phys. A: Math. Theor.

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In analyses of target detection with Gaussian state transmitters in a thermal background, the thermal occupation is taken to depend on the target reflectivity in a way which simplifies the analysis of the symmetric quantum hypothesis testing problem. However, this assumption precludes comparison of target detection performance between an arbitrary transmitter and a vacuum state transmitter, i.e., "detection without illumination", which is relevant in a bright thermal background because a target can be detected by its optical shadow or some other perturbation of the background. Using a target-agnostic thermal environment leads to the result that the oft-claimed 6 dB possible reduction in the quantum Chernoff exponent for a two-mode squeezed vacuum transmitter over a coherent state transmitter in high-occupation thermal background is an unachievable limiting value, only occurring in a limit in which the target detection problem is ill-posed. Further analyzing quantum illumination in a target-agnostic thermal environment shows that a weak single-mode squeezed transmitter performs worse than "no illumination", which is explained by the noise-increasing property of reflected low-intensity squeezed light.

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“…A more challenging scenario arises when multiple targets are present, especially when the number of targets is not available [ 63 , 64 ]. Smart employment of the scenario information and target attributes is the key to obtaining reasonable performance detection even without reference signals [ 65 , 66 ]. In this context, the use of antenna arrays is very helpful, as the angular discrimination of the different targets makes them easier to identify.…”

Section: Open Issues and Future Research Directionsmentioning

confidence: 99%

Beamforming Techniques for Passive Radar: An Overview

Núñez-Ortuño¹,

González-Coma²,

López³

et al. 2023

Sensors

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Passive radar is an interesting approach in the context of non-cooperative target detection. Because the signal source takes advantage of the so-called illuminator of opportunity (IoO), the deployed system is silent, allowing the operator cheap, portable, and practically undetectable deployments. These systems match perfectly with the use of antenna arrays to take advantage of the additional gains provided by the coherent combination of the signals received at each element. To obtain these benefits, linear processing methods are required to enhance the system’s performance. In this work, we summarize the main beamforming methods in the literature to provide a clear picture of the current state of the art. Next, we perform an analysis of the benefits and drawbacks and explore the chance of increasing the number of antenna elements. Finally, we identify the major challenges to be addressed by researchers in the future.

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A Target Detection Method of Distributed Passive Radar without Direct-Path Signal

Cited by 8 publications

References 26 publications

The Methods for Improving the Quality of Detection of Inconspicuous Aerial Objects Through the Use of External Radiation Sources

The Methods for Improving the Quality of Detection of Inconspicuous Aerial Objects Through the Use of External Radiation Sources

Not even 6 dB: Gaussian quantum illumination in thermal background

Beamforming Techniques for Passive Radar: An Overview

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