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Signal playback method for signal playback module based on ground load detector

A technology of signal playback and detector, applied in instruments, simulators, computer control, etc., can solve problems such as maintenance difficulties

Inactive Publication Date: 2015-04-08
CHENGDU LONGTENG ZHONGYUAN INFORMATION TECHCO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the particularity of satellite work in orbit, it is extremely difficult to maintain it after launch

Method used

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  • Signal playback method for signal playback module based on ground load detector
  • Signal playback method for signal playback module based on ground load detector

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Embodiment Construction

[0022] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0023] like figure 1 Shown, a kind of signal playback method based on the signal playback module of load ground detector, it comprises the following steps:

[0024] S1. The FPGA receives the data signal from the host computer through the PCIe bus, and temporarily stores it in the DDR cache;

[0025] S2. FPGA receives the trigger signal from the main control computer through the PCIe bus, and starts signal playback;

[0026] S3. FPGA filters and modulates the data signal, and then outputs the filtered and modulated data signal to the digital-to-analog conversion circuit;

[0027] S4. The digital-to-analog conversion circuit performs digital-to-analog conversion on the data signal to obtain an analog signal, and then outputs the analog sign...

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Abstract

The invention discloses a signal playback method for a signal playback module based on a ground load detector, and the method comprises the following steps that an FPGA receives a data signal from a main control computer through a PCIe bus, and the data signal is temporarily stored in a DDR buffer memory; the FPGA receives a triggering signal from the main control computer through the PCIe bus and starts the signal playback; the FPGA carries out the filtering and modulation of the data signal, and enables the data signal after filtering and modulation to be transmitted to a digital-analog conversion circuit; the digital-analog conversion circuit carries out the digital-analog conversion of the data signal, obtains an analog signal, and outputs the analog signal to a filter circuit; and the filter circuit filters out a spurious signal in the analog signal and enables the analog signal to be outputted to external equipment through two DA output terminals. The method can achieve the transformation and modulation of data rate of a specific data source, and outputs a radio frequency signal meeting the requirements of indexes.

Description

technical field [0001] The invention relates to a signal playback method based on a signal playback module of a load ground detector. Background technique [0002] Artificial satellites are the most launched and fastest-growing spacecraft, and are widely used in telecommunications, meteorology, resource surveys, military reconnaissance and other fields. At present, artificial satellites are mainly composed of structural systems, propulsion systems, thermal control systems, power supply and distribution systems, star systems, telemetry and remote control systems, attitude and orbit control systems, data transmission systems, and payloads. Among them, the payload is the subsystem that directly performs specific tasks in the satellite, which is the core part of the satellite, and it is the main subsystem that determines the performance level of the satellite. The data transmission system is the key subsystem to realize the real-time transmission of payload information between ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25314
Inventor 龙宁张星星
Owner CHENGDU LONGTENG ZHONGYUAN INFORMATION TECHCO
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