Design And Development Of Correlation Identification Receiver Based On ARM Cortex-A8

The correlation identification method based on pseudo-random signals is applied to electrical surveying.There are still some problems in the study of receivers for correlation identification methods.On the one hand,many studies remain at the theoretical level,and the receiver used for correlation identification methods are not yet available;On the other hand,existing receivers have some problems,such as not being designed for correlation identification,poor control and processing performance,and high price.Aiming at the problems existing in the research of correlation identification receivers,this paper designs and implements a receiver based on ARM Cortex-A8 single-chip architecture.The receiver is based on the correlation identification method.The main tasks include collecting data,storing data,calculating and other functions;the receiver adopts a single-chip structure,and selects the AM3358 chip with powerful ARM Cortex-A8 architecture as the core chip to deal with increasingly rich demands and increasingly complex calculation requirements;because the design of receiver is simplified,the research cost is also reduced.The paper includes those parts: firstly,the background,significance and current situation of the correlation identification and receivers are introduced.Then,the design of the receiver is described in detail.This part is the focus of this paper,including hardware and software.The hardware part introduces the hardware structure of the receiver,including the module and the concrete realization.The software part includes the transplantation of embedded Linux operating system and the preparation of Qt acquisition program to realize the hardware control.Finally,we tested the receiver through actual experiments,including the collection of sinusoidal signal test and the circuit test.The main innovations of the correlation receiver in this paper are as follows: the receiver is designed according to the correlation method to meet the requirement of the receiver.The receiver adopts ARM Cortex-A series chip and transplants the embedded Linux operating system.The control,processing and computing capabilities of the correlation identification receiver are more powerful than traditional receivers that based on the low-end control chip receiver without embedded system.The correlation identification can satisfy the requirements of the correlation identification method.The receiver uses a dedicated collection program to complete the acquisition task through the touch-screen that can control the data storage and processing,and collection program have good scalability.