Design of Radar Imaging Processing Platform Based on the Architecture with Digital Signal Acquisition Board and GPU

2021 ◽  
Author(s):  
Feng Feng ◽  
Yatao Li ◽  
Xi Ye ◽  
Shuhai Shi ◽  
Shuguang Li
Keyword(s):  
Digital Signal ◽  
Radar Imaging ◽  
Signal Acquisition ◽  
Imaging Processing ◽  
Processing Platform

Signal Acquisition and Processing in Hydraulic Components Test System

2013 ◽  
Vol 846-847 ◽  
pp. 972-976
Author(s):  
Xiao Teng Zeng
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Performance Test ◽  
Performance Testing ◽  
Digital Signal ◽  
Test System ◽  
Processing Method ◽  
Signal Acquisition ◽  
Performance Parameters ◽  
Signal Acquisition And Processing

The key to the performance test system for hydraulic components is to realize real, fast and accurate signal acquisition and processing. By analysis the analog and digital signal processing during hydraulic components Performance testing, a new signal flow scheme is proposed. It described in detail the acquisition and processing method of serial signals and PLC signals, thus solving the lag and distortion during signal processing and realizing the real-time display of data and the automatic report of performance parameters during hydraulic components testing process.

Design of Parametric Loudspeaker and Receiver System

2014 ◽  
Vol 909 ◽  
pp. 222-227
Author(s):  
Zi Yu Chen ◽  
Xin Wei Zhang
Keyword(s):  
Signal Processing ◽  
Digital Signal ◽  
Signal Acquisition ◽  
Median Filtering ◽  
Receiver System ◽  
Audible Sound ◽  
Processing Techniques ◽  
Conventional Systems ◽  
Signal Processing Techniques ◽  
Mean Filtering

Parametric loudspeaker systems have been widely used for projecting highly directional audible sound to a specified area. However, the demodulated signal from parametric loudspeaker suffers from high distortion since the nonlinear interaction among primary waves also generate harmonics. In order to reduce distortion, signal acquisition and digital signal processing techniques can be applied at the receiver. In this paper, a parametric loudspeaker and receiver system is designed to reduce distortion using median filtering and mean filtering at the receiver. Compared to conventional systems, the demodulated signal using proposed techniques exhibits lower distortion.

The Design and Realization of Airborne Electrical Equipments’ Online Test System in the Environments of Mechanics

2014 ◽  
Vol 687-691 ◽  
pp. 1038-1043
Author(s):  
Yong Tao Yu ◽  
Ming Chen ◽  
Feng Tian ◽  
Ying Ji Shan
Keyword(s):  
High Efficiency ◽  
Dynamic Test ◽  
Digital Signal ◽  
Test System ◽  
Experimental Result ◽  
Signal Acquisition ◽  
Online Test ◽  
Development Tool ◽  
The Stability ◽  
Software Development Tool

Current OTS (Online Test System, OTS) of airborne electrical equipments in the environments of mechanics is only able to test statically but dynamically. To solve the problem, a new kind of dynamic test system based on PXI bus is designed. In the design, modular instrument resources that used in the third generation of ATE (Auto Test System, ATE) commonly is adopted to prove the system’s reusability, extensibility and standard ability, digital signal acquisition is replaced with analog signal acquisition to realize dynamic test, support from the method of process monitoring is drew to get the capability to detect the reversible failure in UUT (Unit Under Test, UTT), VC++ language is used as the software development tool to control the system and record test data. In the special mechanics environment such as centrifuge, drawing lessons from the experience of the new concept dynamic test, the system architecture of remote control acquisition is used to prove the stability and efficiency of the test system greatly. The experimental result shows that the system runs well and has more advantages such as high efficiency of auto-test and reliability of failure diagnosis results, meeting new demand of the airborne electrical equipments’ online test in the environments of mechanics.

PC104 Interface Recommended for High Speed Data Acquisition Systems

2013 ◽  
Vol 325-326 ◽  
pp. 926-929 ◽  
Author(s):  
Dorina Purcaru ◽  
Cornelia Gordan ◽  
Romulus Reiz ◽  
Anca Purcaru
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Low Cost ◽  
Sampling Rate ◽  
Digital Signal ◽  
Signal Acquisition ◽  
Synchronized Sampling ◽  
Data Acquisition Systems ◽  
High Speed Data Acquisition ◽  
High Speed Data

The interface presented in this paper is recommended for high speed data acquisition systems; it performs a synchronized sampling of all common-mode or differential analog inputs with a high sampling rate. This is a low cost interface, entirely controlled by the PC104 CPU. Programmable electronic modules that contain such PC104 interfaces can be found running in the energetic system from Romania; these dedicated equipments perform the analog and digital signal acquisition for monitoring and recording different specific transient events. Some experimental results obtained using the disturbance monitoring device PC-08/104 are also presented in this paper.

scholarly journals Gnss Signal Processing in Gpu

2013 ◽  
Vol 48 (2) ◽  
pp. 51-61 ◽  
Author(s):  
Petr Roule ◽  
Ondřej Jakubov ◽  
Pavel Kovář ◽  
Petr Kařmařík ◽  
František Vejražka
Keyword(s):  
Signal Processing ◽  
Graphics Processing Units ◽  
Digital Signal ◽  
General Purpose ◽  
Global Navigation Satellite Systems ◽  
Acquisition Time ◽  
Signal Acquisition ◽  
Satellite Systems ◽  
Central Processing ◽  
Global Navigation Satellite

ABSTRACT Signal processing of the global navigation satellite systems (GNSS) is a computationally demanding task due to the wide bandwidth of the signals and their complicated modulation schemes. The classical GNSS receivers therefore utilize tailored digital signal processors (DSP) not being flexible in nature. Fortunately, the up-to-date parallel processors or graphical processing units (GPUs) dispose sufficient computational power for processing of not only relatively narrow band GPS L1 C/A signal but also the modernized GPS, GLONASS, Galileo and COMPASS signals. The performance improvement of the modern processors is based on the constantly increasing number of cores. This trend is evident not only from the development of the central processing units (CPUs), but also from the development of GPUs that are nowadays equipped with up to several hundreds of cores optimized for video signals. GPUs include special vector instructions that support implementation of massive parallelism. The new GPUs, named as general-purpose computation on graphics processing units (GPGPU), are able to process both graphic and general data, thus making the GNSS signal processing possible. Application programming interfaces (APIs) supporting GPU parallel processing have been developed and standardized. The most general one, Open Computing Language (Open CL), is now supported by most of the GPU vendors. Next, Compute Unified Device Architecture (CUDA) language was developed for NVidia graphic cards. The CUDA language features optimized signal processing libraries including efficient implementation of the fast Fourier transform (FFT). In this paper, we study the applicability of the GPU approach in GNSS signal acquisition. Two common parallel DSP methods, parallel code space search (PCSS) and double-block zero padding (DBZP), have been investigated. Implementations in the C language for CPU and the CUDA language for GPU are discussed and compared with respect to the acquisition time. It is shown that for signals with long ranging codes (with 10230 number of chips - Galileo E5, GPS L5 etc.). Paper presented at the "European Navigation Conference 2012", held in Gdansk, Poland

Design and Implementation of Bipolar Digital Signal Acquisition and Processing System Based on FPGA and ACPL-224

2011 ◽  
Vol 3 (4) ◽  
pp. 1-5
Author(s):  
Guangfu Lin ◽  
Zhenxing Yin ◽  
Guo Feng
Keyword(s):  
Design Method ◽  
Processing System ◽  
Digital Signal ◽  
External Factors ◽  
External Signal ◽  
Signal Acquisition ◽  
Interface Circuit ◽  
Design And Implementation ◽  
System Requirements ◽  
Signal Acquisition And Processing

This paper proposes new approaches for designing a bipolar DS acquisition system to reduce the harm of external factors on equipment, as well as fulfill system requirements at the veracity and reliability of the equipment to quickly connect. The design method chosen is ACPL-224 for chip of the interface about data acquisition on the FPGA device, including system principle, interface circuit logic, the method of data processing, and so forth. Now that this method has been applied, it has achieved good results, including extending the system’s adaptive range of external signal and enhancing the efficiency of the interface to quickly connect.

Design and Implementation of Bipolar Digital Signal Acquisition and Processing System based on FPGA and ACPL-224

2013 ◽  
pp. 206-211
Author(s):  
Guangfu Lin ◽  
Zhenxing Yin ◽  
Guo Feng
Keyword(s):  
Design Method ◽  
Processing System ◽  
Digital Signal ◽  
External Factors ◽  
External Signal ◽  
Signal Acquisition ◽  
Interface Circuit ◽  
Design And Implementation ◽  
System Requirements ◽  
Signal Acquisition And Processing

This paper proposes new approaches for designing a bipolar DS acquisition system to reduce the harm of external factors on equipment, as well as fulfill system requirements at the veracity and reliability of the equipment to quickly connect. The design method chosen is ACPL-224 for chip of the interface about data acquisition on the FPGA device, including system principle, interface circuit logic, the method of data processing, and so forth. Now that this method has been applied, it has achieved good results, including extending the system’s adaptive range of external signal and enhancing the efficiency of the interface to quickly connect.

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