GNSS IF signal numeralization collecting device for satellite positioning

Abstract

The invention relates to a GNSS intermediate frequency signal digital acquisition device for satellite positioning with accurate acquisition, stable data transmission and good compatibility. The device comprises a radio frequency module, a sampling module, an FPGA control module, a buffer module, a transmission module and a computer, wherein the radio frequency module, the sampling module, the FPGA control module, the transmission module and the computer are sequentially connected, and the FPGA module is also connected with the buffer module; the sampling module is used for sampling analog intermediate frequency signals output from the radio frequency module and outputting digital intermediate frequency signals; the buffer module is used for receiving the digital intermediate frequency signals under the control of the FPGA control module and buffering the digital intermediate frequency signals output from the sampling module; the transmission module is used for reading data from the buffering module and transmitting data to the computer via an USB bus; and the FPGA control module is used for controlling the data transmission of the transmission module.

Description

technical field [0001] The invention belongs to the field of GNSS intermediate frequency signal acquisition devices for satellite positioning, in particular to a GNSS intermediate frequency signal digital acquisition device for satellite positioning that uses FPGA and SDRAM hardware devices to realize accurate acquisition of intermediate frequency signals, stable data transmission, and good compatibility. Background technique [0002] At present, the application of satellite positioning system is more and more extensive, and countries such as China, the European Union and Japan are actively developing their own independent satellite positioning systems. The function and performance of the GNSS intermediate frequency signal receiving device in the satellite positioning receiver directly affects the effect of satellite positioning applications, and is the basis and key equipment for developing satellite positioning application systems. However, in the existing satellite positi...

AI Technical Summary

Problems solved by technology

However, in existing satellite positioning receivers, the ASICs of GNSS intermediate frequency signal receiving devices provide users with very limited flexibility, and the algorithms developed by users are difficult to implement

Images