Heterogeneous parallel framing method of vdif format data based on gpu

A format data and framing technology, applied in the field of communication, can solve problems such as failure to support VDIF data exchange format, lack of efficient heterogeneous parallel framing methods, and difficulty in system architecture reconstruction, so as to improve system flexibility and reduce development costs. Difficulty, the effect of improving frame editing efficiency

Active Publication Date: 2021-04-06
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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Problems solved by technology

[0005] (1) It is difficult to reconstruct the system architecture based on FPGA, and it is difficult to upgrade;
[0006] (2) Failure to support the VDIF data exchange format;
[0007] (3) Lack of efficient heterogeneous parallel frame encoding method based on GPU
[0008] At present, there is no scheme to improve the framing of VDIF format data by using Graphic Process Unit (GPU).

Method used

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  • Heterogeneous parallel framing method of vdif format data based on gpu
  • Heterogeneous parallel framing method of vdif format data based on gpu
  • Heterogeneous parallel framing method of vdif format data based on gpu

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Embodiment Construction

[0058] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0059] A typical interferometric system baseband converter system structure is as follows: figure 1 shown. The baseband converter as a whole is composed of a data preprocessing module, a parallel channelization module, a data formatting module and an IO module. The data preprocessing module and parallel channelization are the main signal processing modules, whose main functions are to complete the amplitude adjustment, interference suppression, AD conversion, frequency down conversion, filtering and sub-band extraction of high-speed analog signals, and finally output multiple channels with fixed bandwidth as required Parallel subchannel signals. The main function of the data formatting module is to output data in a standard format according to the requirements of the interface file. This module is a bridge for communication between the baseband converter...

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Abstract

The invention discloses a heterogeneous parallel frame coding method for VDIF format data based on GPU, and relates to the technical field of communication. The present invention makes full use of the high flexibility and high-efficiency parallel data processing capability of a graphics processing unit (Graphic Process Unit, GPU), proposes a GPU-based data format framing method conforming to the VDIF specification, and designs the frame header calculation process, multiple Channel single-threaded framing mode and multi-channel multi-threaded framing mode. That is, the host receives input data in a multi-channel manner through the graphics processor GPU, obtains input parameters, calculates frame header parameters, calculates the number of frames per second and the number of data bits per second of the input data, and judges the number of frames per second of the input data Whether it is an integer, and whether the number of data bits per second is an integer multiple of the number of quantized bits; if both are yes, then select single-channel single-thread mode or multi-channel single-thread mode according to requirements; execute single-channel single-data Threaded process and multi-channel single data threaded process.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a GPU-based heterogeneous parallel frame encoding method for VDIF format data. Background technique [0002] Very Long Baseline Interferometry (VLBI) technology has been widely used in deep space measurement and control systems because of its unique ultra-high spatial resolution and positioning accuracy, and the VLBI Data Interchange Interface Specification (VLBI Data Interchange Format, VDIF) is the most widely supported data format in the VLBI field, and is the basis for international VLBI joint observation data exchange. [0003] At present, the VLBI baseband conversion and recording system of the deep space measurement and control network is a VLBI digital backend (Digital Backend Equipment, DBE) system developed based on the FPGA platform. The system supports both the VSI standard specification and the RDEF specification from the beginning of the design. However, wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/20
CPCG06T1/20G06T2200/28
Inventor 马宏焦义文陈永强吴涛杨文革刘燕都李贵新史学书陈雨迪卢志伟
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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