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The Synchronization and Data Transmission of High-Frequency Surface Wave Multi-Static Radar

Author: BaiXueFeng
Tutor: MaZiLong
School: Harbin Institute of Technology
Course: Information and Communication Engineering
Keywords: HF ground wave Multi- base Synchronous Data transmission
CLC: TN958
Type: Master's thesis
Year: 2010
Downloads: 72
Quote: 0
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Abstract


The HF ground Bo Duoji Radar is a set of multi-station high frequency ground wave over-the-horizon radar system, compatible with the goal of detecting ships and aircraft. The Duojileida system is composed by two or more base stations, which may be only one base station has a transmitter function, all of the base station can achieve the detection of the ship target and aircraft targets. Frequency synchronization is one of the key issues of the multi-radar system, it directly affects the working conditions and detection accuracy of the radar system. As the high frequency Duojileida system each base station distance and may contain the carrier-based mobile station, so that each base station must use a separate reference source. The reference frequency accuracy and stability of a direct impact on the measurement results of each base station on the same target, especially for a long period of time of treatment results. After data fusion of the plurality of base stations, and will eventually affect detection result of Duojileida. Therefore, the indicator of the high-frequency multistatic radar system in the frequency synchronization accuracy based. The high frequency Duojileida system also need to achieve time synchronization. The synchronization includes absolute time of each base station the time of the high-frequency Duojileida synchronous and relative time synchronization between the base stations. Wherein the absolute time of each base station synchronization using a satellite navigation system to maintain the uniformity of the timing start time as the local clock of each base station, a relative time synchronization main requirements of each base station in a period of time after start of the timing time unity. Data transmission link is solve the problem of synchronization information transmission between the high-frequency multistatic radar stations and detect data transmission. The need to transfer data Duojileida system mainly includes the data content of the control command, the system parameters, the detection result data, status information, etc.. Classified by the contents of the transmitted data, the basic content of the data type, and real-time nature of the basic requirements; through analysis, the calculation to determine the basic requirements for a data transmission rate of Duojileida system; consolidated distant transmission, The real-time requirements, and data calculated results, examine a variety of data transmission program, to determine the data transmission scheme of the 3G mobile communication Internet. This article first multi-radar system time synchronization, frequency synchronization, as well as the system to transfer data were analyzed and the results is given; Secondly, for the results of the analysis were designed multi-radar system synchronization control programs and data transmission scheme and to develop appropriate protocols; give preliminary validation of the data transmission system design, software programming.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radar > Radar: institutional sub-
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