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High speed data transmission receiver

A receiver, high-speed technology, applied in digital transmission systems, transmission systems, electrical components, etc., can solve problems such as online update and program dynamic loading technology that are not versatile, do not support sampling rate, etc., to achieve powerful, analog Input interface for flexible effects

Inactive Publication Date: 2013-05-01
10TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In addition, the device does not support the online update of the sampling rate and the dynamic loading technology of the program, so the versatility is not strong

Method used

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Embodiment Construction

[0026] refer to figure 1 . In the embodiments described below, the general high-speed digital transmission receiver includes an analog processing part and a digital processing part. The main core hardware architecture consists of ultra-high-speed analog / digital converter ADC (AT84AD001 of E2V Company), direct digital frequency synthesizer DDS (DS856 of EUVIS Company), large-scale programmable gate array (FPGA) and high-performance digital signal processing DSP composition. The core circuit is realized by high-speed analog-to-digital converter ADC, high-speed DDS, FPGA and high-performance DSP. In the analog processing part, the ADC sampling interface is compatible with two IQ input interfaces and one IF input interface, and the input interface mode can be adjusted by setting the sampling mode of the ADC online. The input interface mode of the ADC can be configured in real time, and the setting is compatible with all-digital intermediate frequency signal input and I / Q two-wa...

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Abstract

The invention provides a high speed data transmission receiver and aims to provide the data transmission receiver which is powerful in function and strong in universality and is designed modularly. The technical scheme provided by the invention is that in a simulating part, a DDS (Direct Digital Synthesizer) generates a variable clock to an ADC (Analog to Digital Converter) for sampling; high speed data stream after ADS sampling is sent to a data distributor DMUX (Demultiplexer) in a digital part to reduce the speed, and parallel ADC data stream is sent to a demodulating FPGA1 (Field Programmable Gate Array) to demodulate; demodulated data is decoded through a decoding FPGA 2 and output to a PFGA3 for protocol processing and packaging; the PFGA3 is sent to a data recording device to store through a photovoltaic conversion module, and the packaged data is output to a remote control center; a DSP (Digital Signal Processor) receives various control commands issued by a host computer monitoring program and dynamically loads the programs of the demodulating FPGA1 and the decoding FPGA2 online to write frequency control words into a DDS frequency control word register corresponding to the FPGA3; and the FPGA3 converts an updating command sent by the DSP into a control time sequence corresponding to the DDS to generate a corresponding sampling clock which is sent to the ADC for sampling.

Description

technical field [0001] The invention relates to a ground receiving device that provides a transmission path for data generated by various satellite and airborne payloads, completes demodulation and decoding of high-speed data, and realizes high-speed information acquisition. technical background [0002] As early as the 1980s, some countries developed various reconnaissance satellites, military satellites, resource detection satellites, high-resolution earth observation satellites, and 100Mbps high-speed data transmission systems. So far, NASA has included 6 satellites in orbit and the Baisha Complex Station composed of the first and second generation Baisha ground stations, and the second generation tracking and data relay satellite system (TDRSH, I, J) put into use in the early 21st century has been proposed s plan. In recent years, with the expansion of the application field of high-speed data transmission technology, the aircraft in the atmosphere has also joined the ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/16H04B1/00H04L1/00
Inventor 刘进军杜瑜
Owner 10TH RES INST OF CETC
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