Radars based on combinations of multiple-input multiple-output (MIMO) and continuous frequency modulation (FMCW) technologies are being actively investigated. FMCW MIMO radars with slow inter-symbol modulation of the ...
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ISBN:
(数字)9798331518752
ISBN:
(纸本)9798331518769
Radars based on combinations of multiple-input multiple-output (MIMO) and continuous frequency modulation (FMCW) technologies are being actively investigated. FMCW MIMO radars with slow inter-symbol modulation of the initial phase in the transmitting elements and inter-pulse accumulation in the receiving elements have a significant advantage due to the significantly reduced computational complexity. However, such systems have a number of disadvantages, one of which is the strong influence of correlation characteristics of the signals used on the spatial ambiguity function (AF). In this paper, we build a mathematical model of MIMO FMCW radar with 16 transmitting and 16 receiving elements and show the results of the study of the influence of cross-correlation distortions on the spatial AF for three types of modulating signals: Legendre polynomials, Walsh-Hadamard codes and Zadoff-Chu sequences. It is shown that without introduction of additional phase compensations of the received signals unacceptable distortions of AF for velocities, for velocities from 20% of the range occur.
Safe operation of multi-robot systems is critical, especially in communication-degraded environments such as underwater for seabed mapping, underground caves for navigation, and in extraterrestrial missions for assemb...
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automatic parameter tuning methods for planning algorithms, which integrate pipeline approaches with learning-based techniques, are regarded as promising due to their stability and capability to handle highly constrai...
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This paper delves into the investigation of a distributed aggregative optimization problem within a network. In this scenario, each agent possesses its own local cost function, which relies not only on the local state...
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In recent years, adaptive identification methods that can achieve the true value convergence of parameters without requiring persistent excitation (PE) have been widely studied, and concurrent learning has been intens...
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The transition from large centralized complex controlsystems to distributed configurations that rely on a network of a very large number of interconnected simpler subsystems is ongoing and inevitable in many applicat...
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In this paper, we develop a regularized higher-order Taylor based method for solving composite (e.g., nonlinear least-squares) problems. At each iteration, we replace each smooth component of the objective function by...
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In order to improve the detection accuracy and efficiency of surface defects on ceramic tiles, a detection model based on DeepLabV3+and combined with MobileNetv2 for feature extraction was constructed. Using ECA atten...
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The paper discusses several mathematical issues related to the numerical calculation of entanglement amount present in states describing bipartite quantum systems. The novel aspect of the presented material is the use...
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Train control Center (TCC) is the hub of the information interaction of the column control system. It is the core system that ensures the safety of railway driving and ensure transportation efficiency. The traditional...
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ISBN:
(数字)9798331506797
ISBN:
(纸本)9798331506803
Train control Center (TCC) is the hub of the information interaction of the column control system. It is the core system that ensures the safety of railway driving and ensure transportation efficiency. The traditional manual test method has many problems, such as high test cost, long time-consuming and low efficiency, and great influence of human subjective factors. This paper uses computer simulation technology to build a simulation test system. By analyzing the information interaction between the column control center and other devices, the computer simulation technology is used to build the simulation test system simulation control system operation. This system can intuitively reflect the performance of the column control system, which is convenient to optimize and adjust the design scheme, make theoretical guidance for the establishment of the real control system. According to the functional test requirements of TCC, this paper uses Colored Petri Net (CPN) to establish a hierarchical model for the simulation test system of the train control center. Taking the temporary speed limit scene test as an example, the formal modeling of the simulation test system through CPN can avoid the ambiguity caused by the specification description, improve the timeliness and safety of the system, help to find the problems that may occur in the design specification, manufacturing and operation of the system, and provide some reference for the design of the real train control system.
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