Design And Implementation Of A Regional Positioning System Receiver

According to the requirements and development of the modern fire-control positioning system, a design scheme of a regional positioning system is proposed to provide the artillery positioning information when GPS positioning system is disturbed.At first, after describing the composition, positioning theory and signal structure, the feasibility of the regional positioning system is verified in theory. Then the paper describes the hardware structure and the circuit design of the regional positioning system receiver. The chip GP2015 is adopted as the RF front-end for signal down conversion processing. GP2021 is used as the C/A code base-band correlater for the IF digital signal demodulation and dispreading. As the main microcontroller, LPC2214 implements the data access and computing of the correlation channels, as well as the controlling of the state of the loop working. The design of the typical receiver can not only receive the measurement signals of the regional positioning system, but also implement the reception of the GPS satellite signals, which verified the feasibility of the hardware design.This paper implements the module design of the receiver driver, which not only reduces the coupling between the software modules, but also facilitates the expansion of the functions of the system and software maintenance.The author is responsible for the receiver hardware design in the project. The design of schematic and PCB diagram is completed, and then the debugging is carried out. The tests are carried out after the design of the software. The results show that the receiver runs well and can meet the requirements of the design.