UWB radar signal simulator based on FPGA and UWB radar signal generation method

Abstract

The invention relates to a UWB radar signal simulator based on FPGA, comprising a PC104 interface module, an RAM module, an FPGA module and a high-speed DAC module; the PC104 interface module completes data transmission with a host with PC104 mode by a PCI protocol; the RAM module adopts six ZBT-SRAMs with the bit width of 32 as data cache; the FPGA module adopts Virtex-4 series of product XC4VLX40 offered by Xilinx company and comprises a PCI interface control module, a RAM control module, a high-speed DAC control module and a radar waveform control module; the high-speed DAC control module selects AD9736 of ADI company; the interconnection of all the modules is realized by control modules in the FPGA module, the PC104 interface control module completes butting joint of the FPGA module and the PC104 interface module; data generated by controlling a host computer is transmitted to the inner part of the FPGA module from the PC 104 interface module; the RAM control module completes butting joint of the FPGA module and the RAM module so as to realize the transmission of data between the FPGA and the ZBT-SRAM; and the high-speed DAC control module completes butting joint of the FPGA module and the high-speed DAC module and controls the high-speed DAC module to generate various radar waveforms.

Description

(1) Technical field [0001] The invention relates to a UWB (Ultra Wideband) radar signal simulator based on FPGA (Field Programmable Gate Array). The FPGA controls a high-speed DAC (Digital-to-Analog Converter) to generate various UWB analog signals, which can be used for information such as communication and radar. Transmission and detection belong to the field of information technology. (2) Background technology [0002] According to the Nyquist sampling law, UWB signals can carry more information, so they are widely used in communication, radar and other fields. UWB signals are mainly divided into narrow pulse signals and wide pulse modulated UWB signals. The former has a narrow pulse width and is more difficult to transmit and receive. The latter is similar to the traditional modulation signal form, has a higher average power, and has a long range of action, so it is widely used. For example, the WIMIDEA communication system in the United States uses a wide pulse modul...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a UWB radar signal simulator and a UWB radar signal generation method based on FPGA, so as to solve the problems such as the stability of signal parameters and the rapid switching of waveforms to solve the generation of UWB radar signals

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