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Cognitive radar

description12 papers
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lightbulbAbout this topic
Cognitive radar is an advanced radar technology that utilizes machine learning and artificial intelligence to enhance target detection, tracking, and classification. It adapts its signal processing and operational strategies based on environmental conditions and target behavior, improving performance in complex scenarios and enabling more efficient use of radar resources.
lightbulbAbout this topic
Cognitive radar is an advanced radar technology that utilizes machine learning and artificial intelligence to enhance target detection, tracking, and classification. It adapts its signal processing and operational strategies based on environmental conditions and target behavior, improving performance in complex scenarios and enabling more efficient use of radar resources.

Key research themes

1. How can cognitive radar systems optimally adapt waveform and sensing strategies to dynamic spectral environments?

This theme investigates algorithms and system architectures enabling cognitive radars to sense their environment, learn from it, and adapt transmission and reception parameters in real-time to optimize detection, tracking, and spectral coexistence. It is critical given the increasing spectral congestion and the need for multifunctional radar systems to operate in spectrally dense environments while maintaining performance.

Key finding: Introduces the foundational concept of cognition in radios as an intelligent system that senses and adapts to its environment to optimize spectrum utilization, underpinning cognitive radar's methodology of... Read more
Key finding: Demonstrates cognitive active radar systems adapt transmitted waveforms (frequency, pulse shape, PRF, power) on-the-fly to avoid spectral interference and optimize target tracking and detection performance. It elucidates the... Read more
Key finding: Examines coherent multistatic cognitive radar networks which exploit spatial diversity and cognitive signal processing to adapt system configurations dynamically for improved sensitivity, target detection, and clutter... Read more
Key finding: Presents a comprehensive treatment of wideband cognitive radio and radar systems targeting multi-GHz spectrum sensing and waveform adaptation. It addresses the integration of compressed sensing, machine learning, and quickest... Read more
Key finding: Discusses practical implementation challenges of cognitive radio functionalities, including spectrum hole detection and dynamic parameter adaptation in complex cellular networks with spatiotemporal variability. It advocates... Read more

2. What roles do machine learning and metacognition play in enhancing cognitive radar system performance and adaptability?

This theme explores advanced cognitive engine designs embedding machine learning and metacognitive frameworks to enable faster adaptation, performance predictability, and dynamic algorithm selection in cognitive radars. These approaches address limitations of static or single-method cognitive engines by providing flexible and self-aware systems capable of optimizing operational parameters based on environmental understanding and historical experience.

Key finding: Introduces a metacognitive engine framework which enables the cognitive radar to adaptively select and tune learning algorithms based on operating channel conditions and objectives, thereby improving adaptation speed and... Read more
Key finding: Develops a reinforcement learning (RL) approach combined with a robust Wald-type detector for massive MIMO radar that maximizes detection probability and achieves constant false alarm rate (CFAR) under unknown disturbance... Read more
Key finding: Proposes a revealed preference and utility maximization framework to deliberately perturb cognitive radar responses, masking the radar's utility function from adversaries attempting to infer its cognition. This study applies... Read more

3. How can optimized waveform design improve cognitive MIMO radar performance in target detection and interference mitigation?

This theme focuses on design and optimization of orthogonal polyphase waveforms and other coding techniques tailored for cognitive MIMO radar systems to enhance resolution, reduce sidelobes, and mitigate interference. Employing evolutionary and nature-inspired algorithms supports waveform adaptability consistent with cognitive radar principles, leading to improved multi-target detection capabilities.

Key finding: Demonstrates that applying the artificial bee colony (ABC) algorithm to optimize orthogonal polyphase waveform sequences yields superior auto- and cross-correlation properties compared to genetic and simulated annealing... Read more
Key finding: Introduces iterative decoding schemes combining fast frequency-hopping M-ary frequency-shift keying with irregular variable-length coding, achieving low bit error rates under partial-band noise jamming and Rayleigh fading.... Read more
Key finding: Surveys spectrum sharing and information embedding methods in joint radar-communication systems, discussing amplitude/phase shift keying and time modulation arrays to embed communication data into radar waveforms. The... Read more

All papers in Cognitive radar

Next-Generation Cognitive Radar Systems brings together contributions from leading researchers who are engaged in the research and development of next generation cognitive abilities in radar engineering. It features recent advances in the... more
This authoritative new resource presents fundamentals of radar analysis including the range equation, detection theory, ambiguity functions, antennas, receivers, SP, and chaff analysis for modern radars. This book addresses details behind... more
The explosive increase in number of smart devices hosting sophisticated applications is rapidly affecting the landscape of information communication technology industry. Mobile subscriptions, expected to reach 8.9 billion by 2022, would... more
The explosive increase in number of smart devices hosting sophisticated applications is rapidly affecting the landscape of information communication technology industry. Mobile subscriptions, expected to reach 8.9 billion by 2022, would... more
Development of smart spectrum sensing techniques is the most important task in the design of a cognitive radio system which uses the available spectrum efficiently. The adaptive SNR estimation based energy detection technique has the dual... more
In recent years, there is rapid growth of wireless multimedia applications which demands more radio spectral resources and requirement of data transmission like video using the same medium which is used for voice transmission. The fixed... more
Assembly refers both to the process of combining parts to create a structure and to the product resulting therefrom. The complexity of this process increases with the number of pieces in the assembly. This paper presents the assembly... more
The two basic performance indices characterizing the multi-target detection task in a radar system are the probability of false alarm (PF A) and the probability of detection PD. It is well-known that, when the disturbance model (i.e.,... more
Dynamic spectrum access is a must-have ingredient for future sensors that are ideally cognitive. The goal of this paper is a tutorial treatment of wideband cognitive radio and radar-a convergence of (1) algorithms survey, (2) hardware... more
The two basic performance indices characterizing the multi-target detection task in a radar system are the probability of false alarm (PF A) and the probability of detection PD. It is well-known that, when the disturbance model (i.e.,... more
The two basic performance indices characterizing the multi-target detection task in a radar system are the probability of false alarm (PF A) and the probability of detection PD. It is well-known that, when the disturbance model (i.e.,... more
In this paper we present a artificial bee colony (ABC) algorithm for NP-Hard problems. This algorithm is considered as one of the newest nature-inspired swarm-based optimization algorithms and has a promising performance. Shortest Common... more