Signal processing method used for manned space communication

Abstract

The invention relates to a signal processing method used for manned space communication. The signal processing method used for manned space communication comprises the steps of S1, by a manned spacecraft, performing mapping processing on initial data frames sent to an extravehicular target object; S2, performing spectrum spreading processing on the initial data frame after being subjected to the mapping processing; and S3, performing scrambling synchronous processing on the initial data frames after the spectrum spreading processing so as to generate transmission data frames. As check codes are attached, checking for the received signals by subsequent target objects is guaranteed, and a key role for guaranteeing normal communication between the manned spacecraft and the target objects is played. Due to the time gap multiplexing processing and spectrum spreading processing, forward signals are guaranteed to be received precisely by the target objects, interference on communication signals between objects is avoided; as the spectrum spreading processing is adopted, multiple forward links can be connected between the manned spacecraft and multiple target objects, simultaneous communication between the manned spacecraft and multiple target objects is guaranteed, and the communication efficiency between the manned spacecraft and the target objects is increased.

Description

technical field [0001] The invention relates to a communication signal processing method, in particular to a signal processing method for manned spaceflight communication. Background technique [0002] With the vigorous development of manned space missions, extravehicular activities have become a feature of manned space missions. As a supporting technology for EVA activities, EVA communication is responsible for realizing two-way real-time communication between spacecraft and astronauts during EVA activities. As the demand for multi-person out-of-vehicle activities in manned space missions increases, manned spacecraft need to address the needs of multi-target out-of-vehicle communication accordingly. The multi-target out-of-vehicle communication of manned spacecraft has the characteristics of one-to-many communication mode and a wide range of activities for astronauts. [0003] For example, the International Space Station uses the method of time division multiple access (T...

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Problems solved by technology

[0003] For example, the International Space Station uses the method of time division multiple access (TDMA) to realize the communication between the manned spacecraft and multiple astronauts who have gone out of the cabin, which solves the problem of communication interference between different astronauts, but at the same time, the The human spacecraft can only communicate with one astronaut out of the cabin, resulting in low communication efficiency, which seriously hinders the requirement for multiple astronauts to communicate with the spacecraft at the same time

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