Networking method and system for a space-based information collection system

Abstract

The invention discloses a networking method and system of a space-based information gathering system. The method performs networking based on frequency division multiple access and time division multiple access, and comprises the following steps: A, allocating frequency to a channel to achieve the frequency division multiple access; dividing the time into a plurality of time frames for transmitting a message on the channel, and dividing each time frame into a plurality of time slots; B, setting an address code before a data segment of the message, wherein each time slot corresponds to a uniqueaddress code; and C, sequentially sending the message according to the time slot corresponding to the address code to achieve the time division multiple access. Since the frequency division multipleaccess + time division multiple access hybrid networking mode is adopted, the self-networking mode is simplified, and the target is automatically transmitted by allocating the fixed time slot according to the address code, so that multi-target networking with different frequency is solved, and the network access of large number of users in the case of insufficient frequency is achieved.

Description

technical field [0001] The invention relates to the technical field of time division multiple access, in particular to a networking method and system for a space-based information collection system. Background technique [0002] In the existing technology, the space-based information collection system is a short-message satellite communication system, which collects self-reported information of various targets on land, sea and air through satellites, so as to achieve useful information on key targets around the world, especially for uninhabited areas Or ocean meteorology, hydrology, ocean exploration, environmental monitoring, scientific and management data and other applications, through satellite collection and reception and forwarded to the corresponding use and management departments, can obtain a large amount of information and data. [0003] Because the space-based information collection system is a global system, it needs to coordinate the use of common frequencies al...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a networking method and system for a space-based information collection system in view of the above-mentioned defects of the prior art, aiming at solving the problem of a large number of users entering the network and unable to signal when the frequency is tight in the prior art. conflict issue

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