Journal ArticleDOI
Scheduling and Power Allocation in a Cognitive Radar Network for Multiple-Target Tracking
Phani Chavali,Arye Nehorai +1 more
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TLDR
A hybrid Bayesian filter that operates by partitioning the state space into smaller subspaces and thereby reducing the complexity involved with high-dimensional state space is proposed.Abstract:
We propose a cognitive radar network (CRN) system for the joint estimation of the target state comprising the positions and velocities of multiple targets, and the channel state comprising the propagation conditions of an urban transmission channel. We develop a measurement model for the received signal by considering a finite-dimensional representation of the time-varying system function which characterizes the urban transmission channel. We employ sequential Bayesian filtering at the receiver to estimate the target and the channel state. We propose a hybrid Bayesian filter that operates by partitioning the state space into smaller subspaces and thereby reducing the complexity involved with high-dimensional state space. The feedback loop that embodies the radar environment and the receiver enables the transmitter to employ approximate greedy programming to find a suitable subset of antennas to be employed in each tracking interval, as well as the power transmitted by these antennas. We compute the posterior Cramer-Rao bound (PCRB) on the estimates of the target state and the channel state and use it as an optimization criterion for the antenna selection and power allocation algorithms. We use several numerical examples to demonstrate the performance of the proposed system.read more
Citations
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Journal ArticleDOI
Cognitive Radar Framework for Target Detection and Tracking
TL;DR: This paper develops a general cognitive radar framework for a radar system engaged in target tracking that includes the higher-level tracking processor and specifies the feedback mechanism and optimization criterion used to obtain the next set of sensor data.
Journal ArticleDOI
Overview of frequency diverse array in radar and navigation applications
TL;DR: What FDA is and why it could be exploited for radar and navigation applications from a top-level system description is introduced and appeal to the radar signal processing and system engineering communities for more investigations on this promising array technique.
Journal ArticleDOI
Simultaneous Multibeam Resource Allocation Scheme for Multiple Target Tracking
TL;DR: Numerical results show that the worst case tracking accuracy can be efficiently improved by the proposed simultaneous multibeam resource allocation (SMRA) algorithm.
Journal ArticleDOI
Collaborative detection and power allocation framework for target tracking in multiple radar system
TL;DR: Simulation results demonstrate that, with given data computation capability and system total power budget, the CDPA scheme can evidently expand the detection range, increase the resource utilization efficiency of the MRS, and improve the target tracking accuracy.
Journal ArticleDOI
Cognitive Radars: On the Road to Reality: Progress Thus Far and Possibilities for the Future
TL;DR: It is explained how the cognitive radar paradigm can also be applied to passive radar (PR) and the limits and the path forward are highlighted.
References
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TL;DR: The Fundamentals of Statistical Signal Processing: Estimation Theory as mentioned in this paper is a seminal work in the field of statistical signal processing, and it has been used extensively in many applications.
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TL;DR: Estimation with Applications to Tracking and Navigation treats the estimation of various quantities from inherently inaccurate remote observations using a balanced combination of linear systems, probability, and statistics.
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Beyond the Kalman Filter: Particle Filters for Tracking Applications
TL;DR: Part I Theoretical concepts: introduction suboptimal nonlinear filters a tutorial on particle filters Cramer-Rao bounds for nonlinear filtering and tracking applications: tracking a ballistic object bearings-only tracking range- only tracking bistatic radar tracking targets through blind Doppler terrain aided tracking detection and tracking of stealthy targets group and extended object tracking.