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Remote sensing satellite multi-priority unbalanced rate load data dynamic multiplexer simulation system

A multi-priority, data-loaded technology, applied in the field of satellite multiplexer simulation, can solve the problems such as the inability to dynamically adjust the code rate, the inflexibility of the test mode of the satellite multiplexer ground simulation device, and the data error, so as to accelerate the research and development. task, the effect of shortening the test cycle

Active Publication Date: 2020-06-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the problem that the test mode of the ground simulation device of the existing satellite multiplexer is not flexible, and the code rate cannot be dynamically adjusted, which may easily cause data loss or data error, the present invention provides a remote sensing satellite multi-priority unbalanced rate load data dynamic Multiplexer Simulation System

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  • Remote sensing satellite multi-priority unbalanced rate load data dynamic multiplexer simulation system
  • Remote sensing satellite multi-priority unbalanced rate load data dynamic multiplexer simulation system
  • Remote sensing satellite multi-priority unbalanced rate load data dynamic multiplexer simulation system

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specific Embodiment approach 1

[0047] Specific implementation mode 1. Combination figure 1 As shown, the present invention provides a dynamic multiplexer simulation system for remote sensing satellite multi-priority unbalanced rate load data, including:

[0048] A data input unit 100, configured to provide multiple input channels corresponding to various standard physical input interfaces;

[0049] A data storage unit 200, configured to provide multiple data storage areas;

[0050]The data dynamic multiplexing unit 300 is used to determine the data multiplexing mode, and the data of the control multiple input channels are respectively stored in multiple data storage areas according to the set channel code rate and address; and the data output unit 400 is controlled by the address from the corresponding The data storage area extracts the multiplexing data and outputs them to the specified output channel;

[0051] The data output unit 400 is configured to provide multiple output channels corresponding to va...

specific Embodiment 1

[0090] Combine below Figure 1 to Figure 5 , the system of the present invention will be described in detail. This embodiment is only an implementation example of the present invention, and any similar examples are within the protection scope of the present invention.

[0091] Figure 5 As shown, on the hardware, the data input unit 100 includes electrical connectors that respectively form multiple input and output channels, LVDS interface chips, RS422 interface chips, 2711 interface chips and isolation chips; the data dynamic multiplexing unit 300 is based on Zynq UltraScale+ The minimum system with the MPSoC chip as the core, and the PXIe bus interface; the data storage unit 200 is a 4GB large-scale storage array composed of DDR4 chips.

[0092] In this embodiment, 12 channels of load data are multiplexed, wherein RS422 data and 2711 data each have 2 channels, and LVDS data has 8 channels. The specific steps are as follows:

[0093] Step 1: Initialize the data dynamic mult...

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Abstract

The invention discloses a remote sensing satellite multi-priority unbalanced rate load data dynamic multiplexer simulation system, and belongs to the technical field of satellite multiplexer simulation. The system comprises a data input unit used for providing a plurality of input channels corresponding to a plurality of standard physical input interfaces; the data storage unit is used for providing a plurality of data storage areas; the data dynamic multiplexing unit is used for determining a data multiplexing mode and controlling the data of the plurality of input channels to be respectivelystored in the plurality of data storage areas according to set channel code rates and addresses; the data output unit is controlled to extract multiplexing data from the corresponding data storage area according to the address and output the multiplexing data to a specified output channel; and the data output unit is used for providing a plurality of output channels corresponding to the pluralityof standard physical output interfaces and outputting multiplexed data streams subjected to format conversion and channel aggregation at different code rates. According to the invention, multi-channel data with different priorities and rates generated by a satellite load or a simulated satellite load can be multiplexed.

Description

technical field [0001] The invention relates to a dynamic multiplexer simulation system for remote sensing satellite multi-priority unbalanced rate load data, and belongs to the technical field of satellite multiplexer simulation. Background technique [0002] Remote sensing satellites play an important role in the fields of natural exploration, disaster prevention, and national defense. The realization of their functions depends on the payloads such as data processors, link managers, and satellite multiplexers on them. Due to the difficulty of research and development of the payload, its delivery time is usually far behind other satellite subsystems, which seriously increases the time for the ground test of the satellite assembly. [0003] The satellite multiplexer ground simulation device is used to simulate or replace the data processing function of the satellite multiplexer load during the satellite ground test process. The device receives multiple channels of satellite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04B7/185H04L1/00
CPCH04B7/18586H04L1/0002H04B17/391
Inventor 赵光权于金祥于希明崔秀海姚博文彭宇彭喜元
Owner HARBIN INST OF TECH
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