A time-sharing multi-purpose telemetry system based on return mission requirements
A telemetry system and multi-purpose technology, applied in radio wave measurement systems, satellite radio beacon positioning systems, measurement devices, etc., can solve problems such as data loss, occupation of measurement and control channel resources, etc. Effectiveness
Active Publication Date: 2019-03-22
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology
Due to the limitations of the single telemetry system, if a single telemetry system is adopted, the telemetry (invalid value) of the return cabin equipment will still be transmitted to the ground when the satellite is in the orbital segment, occupying limited resources of the measurement and control channel
[0004] In addition, under the single telemetry system, once the two cabins are separated, since the central computer must continue to organize and download the satellite telemetry in the instrument cabin, there is no central computer in the return cabin, and all telemetry data during the return process will not be stored on the satellite. First, all the data collected in the return capsule will be lost
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[0035] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0036] The invention provides a time-sharing multi-purpose telemetry system based on returning task requirements, such as figure 2 As shown, it includes the terminal, the S-band transmitter a loaded in the instrument cabin, the remote control demodulator, the central processing unit, the remote unit, the telemetry central control acquisition and editing unit, and the distribution box of the instrument cabin, as well as the S-band transmitter a loaded in the return cabin. Band Transmitter b and RMU;
[0037] Among them, such as image 3 As shown, the terminal is used to send the carrier wave with instructions to the S-band transmitter a and the S-band transmitter b according to the current state; specifically:
[0038]It is used when the instrument cabin and the return cabin are not separated, that is, they are in orbit: to judge whether the S-band trans...
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The invention discloses a time-sharing multipurpose telemetry system based on return mission requirements. According to the telemetry system proposed by the invention, the telemetry systems of a telemetry center control editing unit and an RMU can be designed according to the mission requirements, and thus, different telemetry combined systems can be designed flexibly. In addition, the contents of two kinds of telemetry frames can be different according to different missions. Telemetry frames in different formats can be generated according to the working state of satellite equipment in each working stage. The two telemetry systems are called in a time-sharing manner according to the characteristics of the satellite mission in different stages in order to realize maximum use of the measurement and control channel. Compared with a single telemetry system, the real-time performance and effectiveness of downloading telemetry can be improved effectively. After the two compartments (a brake compartment and a recovery compartment) of a return capsule are separated, a satellite bus system is divided into two parts. A telemetry center control editing unit in an in-orbit instrument compartment continues to perform framing and downloading telemetry, and a returned RMU in a recovery compartment no longer downloads data.
Description
technical field [0001] The invention relates to the field of time-sharing telemetering, in particular to a time-sharing multi-purpose telemetering system based on returning task requirements. Background technique [0002] The return satellite is designed in sub-chambers, including the instrument cabin and the return cabin, and the return cabin is divided into a brake cabin and a recovery cabin. The working state includes two stages: the flight on orbit and the orbit stay. During the in-orbit flight segment, the instrument cabin and return module are in working condition; in the orbit-staying segment, the instrument module is in working condition, and the return module and the instrument module are separated. [0003] At present, whether it is a large satellite or a small satellite, a remote sensing series or a deep space exploration series, most of China adopts a single telemetry system, that is, the PCM telemetry system or the AOS subcontracted telemetry system. Under the...
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IPC IPC(8): G01S19/29
CPCG01S19/29
Inventor 元勇张志强王颖王文平毛新颜郑桂波高洁李晓光黄柯彦
Owner BEIJING INST OF SPACECRAFT SYST ENG