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In general, the conventional Range Alignment methods can provide the satisfactory alignment result in Inverse Synthetic Aperture Radar (ISAR) image. However, because of the airflow disturbance or echo vibration, the target altitude may change and some echoes that deteriorate the precision of Alignment will appear. Considering this problem, echoes feature are analyzed in this paper. To remove the disturbed...
Sphere detection (SD) can significantly reduce the complexity of multiple-input multiple-output (MIMO) maximum-likelihood (ML) detection, but the complexity of SD is still too high to be applied to the practical system. In order to reduce the complexity of SD, two novel reordering methods based minimum mean square error (MMSE) detection are presented in this paper. Rule-R is based on the reliability...
In this paper, a novel objective no-reference model for evaluating video quality of experience (QoE) based on pattern matching of radar chart is proposed. With the input of N-dimensional data, the novel model may have the various video QoE with the different shapes of radar chart patterns. By discriminatory analysis of the patterns, the proposed model makes an effective and visual evaluation for video...
Fault diagnosis of sensor timely and accurately is very important to improve the reliable operation of systems. In the study, fault diagnosis of sensor by chaos particle swarm optimization algorithm and support vector machine is presented in the paper, where chaos particle swarm optimization is chosen to determine the parameters of SVM. Chaos particle swarm optimization is a kind of improved particle...
Test of bench performance to the power of tractor PTO (power take-off ) is a necessary way to evaluate the economic and dynamic performance. So the bracket of engine bench testing is essential equipment, and the effect of DC electric dynamometer used in PTO power test is investigated in this paper. Realizing the process to achieve automatic control and automatic recording, thus greatly reducing the...
Scheduling plays an important role of mapping interactive simulation tasks onto heterogeneous computing nodes in simulation grid. A multi-objective multi-constrained task scheduling model was established considering the consumption of task load, message interaction between tasks, load of computing nodes, and communication delay. And the problem was solved on basis of genetic algorithm. The experimental...
There are many advantages to put the Inverse Synthetic Aperture Radar (ISAR) system up in the stratosphere. Compared with the Ground-based ISAR system, one problem of the Stratospheric ISAR system is the platform drifting. This paper established models for the different positions of the airship and investigated the effects of drifting on imaging. The results of simulations for Stratospheric ISAR system...
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