High-frequency ground wave radar networking clock synchronization control method and device thereof

Abstract

The invention discloses a high-frequency ground wave radar networking clock synchronization control method which is characterized in that each piece of radar detection equipment in the network is respectively configured with a synchronization control part for high-frequency ground wave radar networking, and clock synchronization between any two pieces of radar detection equipment is realized by the synchronization control part. The method comprises the following steps: 1. selecting one from two pieces of detecting equipment to serve as the master equipment of clock benchmark, and the other equipment serves as the slave equipment for adjusting clock and master equipment synchronization; 2. carrying out shift measurement from the master equipment to the slave equipment, and carrying out delay measurement between the master equipment and the slave equipment; 3. calculating the clock offset of the master equipment and the slave equipment by the synchronization control part of the slave equipment according to the shift measurement result obtained in step 2 and the delay measurement result obtained in step 3; and correcting the work clock of the slave equipment according to the clock offset. The device of the invention has favorable generality, and the synchronization control part is suitable for circuits with any specific function, has high flexibility and is convenient for research personnel to work in cooperation with a due division of labour.

Description

technical field [0001] The invention belongs to the technical field of high-frequency ground-wave radar monitoring, and in particular relates to a clock synchronization method and device among radars required for networking of multiple high-frequency ground-wave radars in high-frequency ground-wave radar marine environment monitoring equipment . Background technique [0002] High-frequency surface wave radar is a new tool developed gradually in the past three decades for detecting ocean surface dynamic parameters. It uses the characteristics of small attenuation of vertically polarized high-frequency electromagnetic waves when propagating on the conductive ocean surface, and uses vertically polarized electromagnetic waves to diffract along the surface to achieve beyond-horizon detection and tracking of objects below sea level and line of sight. High-frequency ground wave radar can not only be applied to over-the-horizon detection of low-speed moving targets on the sea, airc...

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Problems solved by technology

Second, GPS signals are transmitted by radio waves, which are inevitably subject to various interferences and may even be interrupted

Thirdly, each radar in the radar network is a time signal sent by GPS satellites respectively. The transmission delay of the signal may be different during the transmission from the satellite to the Japanese standard radar, resulting in a large synchronization error

In addition, from the perspective of security, the synchronization system with the help of GPS is very fragile. Once the GPS satellite stops working or suspends sending information due to some factors, the entire monitoring system will be paralyzed

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