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The term benchmark originates from the chiseled horizontal marks that surveyors made, into which an angle-iron could be placed to bracket (“bench”) a leveling rod, thus ensuring that the leveling rod can be repositioned in exactly the same place in the future. A benchmark in computer terms is the result of running a computer program, or a set of programs, in order to assess the relative performance...
In radar tracking applications, it is often necessary to estimate the Radar Cross Section (RCS) of a target. This estimate is especially important for monopulse radar tracking systems where waveform selection and revisit times are dependent on this estimate. The conventional approach to estimating the RCS for Swerling III and IV (Chi-squared distributed) targets ignores censoring issues that arise...
Converting measurements from sine-space coordinates to Cartesian coordinates has been shown to introduce biases into the measurements. This issue occurs in long-range radar or radars with high range resolution. Previous work that derived the expressions for these biases and provided methods for removing them has focused on the monostatic radar case. In our research, we have provided the equations...
The introduction of biases into monostatic radar measurements as a result of conversion from sine space coordinates into Cartesian coordinates is a well-known problem. Specifically, this problem occurs in long-range radars or radars with high range resolution. However, the biases have only been determined with regard to monostatic radars. With a possible resurgence in bistatic radar, specifically...
This paper describes a baseline target tracking system implemented using the GTRI/ONR Multiple-Input Multiple-Output (MIMO) Radar Benchmark platform. MIMO radar systems have been garnering a significant amount of attention for their potential to improve overall radar performance in comparison to existing systems. While there is much in the current literature regarding the performance and parameter...
In monopulse radar target tracking systems, estimation of the radar cross section (RCS) of a given target under track is important for many reasons that include efficient waveform selection and revisit rate. In practice, for Rayleigh (Swerling I and II) targets, the RCS is calculated assuming an exponentially distributed observed SNR and using the parameter estimator for that distribution. However,...
With the growing amount of research being devoted to the concept of multiple-input multiple-output (MIMO) radar, there has been a lack of a common simulation and benchmarking environment for determining the viability and cost-effectiveness of MIMO radar architectures and algorithms. To this end, GTRI has developed a MIMO Benchmark environment to serve this purpose, which is to be made publically available...
Evaluating the performance of a radar target tracking simulation architecture typically requires creating a mapping between between the tracks generated by that architecture and the true trajectories of the objects in the simulation. The mapping is commonly generated by the solution to a 2D assignment problem in which the costs are based on some measure of the distance between tracks and truth. In...
Proper analysis of a simulated sensor tracking problem requires the ability to correctly determine the true trajectory that underlies each track. Traditionally, kinematic assignment of tracks to truth has been used. More recently, a "track-purity" approach has been proposed to both assess the performance of kinematic truth-to-track assignment algorithms and to overcome some of the anomalies...
Estimating the parameter of a Swerling target's radar cross section (RCS) is of interest as it may provide a discriminating feature to aid measurement- to-track association in multi-target tracking problems. Proper estimation of this statistic requires the appropriate characterization of the probability distribution function of the target's signal to noise ratio (SNR) and, in particular, compensating...
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