Frequency conversion device, radar device, frequency conversion method and frequency conversion program

A frequency conversion method comprising:

• generating, by a digital-to-analog converter, an analog signal by analog conversion of data representing a pulse-like waveform;
• generating, by an up-converter, an RF (radio frequency) signal by multiplying the analog signal with a first local signal;
• transmitting, by a transmitter, the RF signal;
• receiving, by a receiver, a reflected signal of the RF signal;
• generating, by a down-converter, an IF (intermediate frequency) signal by multiplying the reflected signal with a second local signal having a different frequency from the first local signal;
• generating, by an analog-to-digital converter, a digital signal by digitally converting an IF signal;
• and
• generating, by processing circuitry, a baseband signal having a cancelled phase rotation component based on the frequency difference between the first local signal and the second local signal based on the digital signal.

A non-transitory computer-readable medium storing instructions that, when executed by processing circuitry, cause the processing circuitry to perform operations comprising:

• generating, by a digital-to-analog converter, an analog signal by analog conversion of data representing a pulse-like waveform;
• generating, by an up-converter, an RF (radio frequency) signal by multiplying the analog signal with a first local signal;
• transmitting, by a transmitter, the RF signal;
• receiving, by a receiver, a reflected signal of the RF signal;
• generating, by a down-converter, an IF (intermediate frequency) signal by multiplying the reflected signal with a second local signal having a different frequency from the first local signal;
• generating, by an analog-to-digital converter, a digital signal by digitally converting an IF signal;
• and
• generating, by processing circuitry, a baseband signal having a cancelled phase rotation component based on the frequency difference between the first local signal and the second local signal based on the digital signal.