Multi-satellite formation radar timing synchronization method, device and equipment and storage medium

A technology of timing synchronization and time synchronization, which is applied in the direction of synchronization devices, radio transmission systems, electrical components, etc., and can solve problems such as time synchronization of spaceborne radar systems that have not yet been realized

Active Publication Date: 2021-10-01
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

The radar timing signal determines the time window for collecting radar echo data. In related technologies, the time synchronization of the spaceborne radar system of the multi-satellite formation has not yet been realized.

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  • Multi-satellite formation radar timing synchronization method, device and equipment and storage medium
  • Multi-satellite formation radar timing synchronization method, device and equipment and storage medium
  • Multi-satellite formation radar timing synchronization method, device and equipment and storage medium

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Embodiment Construction

[0057] The present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments provided here are only used to explain the present application, not to limit the present application. In addition, the embodiments provided below are some embodiments for implementing the application, rather than providing all the embodiments for implementing the application. In the case of no conflict, the technical solutions described in the embodiments of the application can be combined in any manner implement.

[0058] Satellite formation (Multi-Satellite Formation) flight technology has been widely used. A distributed satellite system is formed through the formation flight of multiple satellites in orbit to realize inter-satellite collaborative work. The spaceborne Synthetic Aperture Radar (SAR) detection system of the multi-satellite formation uses interferometry technology to achieve surface...

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Abstract

The embodiment of the invention provides a multi-satellite formation radar timing synchronization method, device and equipment and a storage medium, which are applied to a multi-satellite formation spaceborne radar system. The spaceborne radar system comprises a primary satellite radar and at least one auxiliary satellite radar. The method comprises the following steps: acquiring relative time difference information between a second pulse signal output by a global navigation satellite system (GNSS) receiver of a primary satellite and a second pulse signal output by a GNSS receiver of any auxiliary satellite in at least one auxiliary satellite; according to the relative time difference information, performing time synchronization on the second pulse signal of the primary satellite and the second pulse signal of any auxiliary satellite; generating a timing signal of the main satellite radar and a timing signal of any auxiliary satellite radar based on the pulse per second signal after time synchronization. Based on the radar timing synchronization method provided by the invention, the time synchronization of the timing signals of the spaceborne radar system of the multi-satellite formation can be realized.

Description

technical field [0001] The embodiments of the present application relate to the technical field of spaceborne radar, and in particular to a radar timing synchronization method, device, electronic equipment and storage medium for a multi-satellite formation. Background technique [0002] For the multi-satellite formation spaceborne radar system, when using interferometry technology to achieve surface elevation measurement, ground moving target indicator (Ground Moving Target Indicator, GMTI), or multi-station imaging, it is necessary to ensure that multiple satellites receive synchronously from the ground imaging area. Radar echo data. Therefore, during the start-up period of the radar, the radar timing signals of the main satellite and the auxiliary satellite need to be synchronized in time, so that multiple satellites can start the collection of radar echo data synchronously. The radar timing signal determines the time window for collecting radar echo data. In related tech...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W56/00
CPCH04B7/18513H04W56/0015H04W56/005
Inventor 李世强禹卫东王伟张衡
Owner AEROSPACE INFORMATION RES INST CAS
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