A radar measurement method, comprising: transmitting, by a radar, a first long range radar, LRR, signal, and receiving a first echo signal corresponding to the first LRR signal; transmitting, by the radar, a second LRR signal, and receiving a second echo signal corresponding to the second LRR signal, wherein the first LRR signal and the second LRR signal are sawtooth waves with linear increase in frequency; and simulating, by the radar, a measurement of a medium range radar, MRR, based on the first echo signal and the second echo signal, wherein the radar generates the MRR signal, and separately calculates a first frequency difference signal (Δ f 1) between the first LRR signal and the MRR signal, and a second frequency difference signal (Δ f 2) between the second LRR signal and the MRR signal, obtaining, by the radar, based on the first echo signal and the first frequency difference signal (Δf1), a third echo signal corresponding to the MRR signal, and obtaining based on the second echo signal and the second difference signal (Δ f 2), a fourth echo signal corresponding to the MRR signal, obtaining an intermediate frequency IF1 based on the third echo signal and the MRR signal, and obtaining an intermediate frequency IF2 based on the fourth echo signal and the MRR signal; obtaining, by the radar, a final intermediate frequency based on the IF1 and the IF2, and performing a radar measurement based on the final intermediate frequency, wherein a frequency span (ΔF) between the first LRR signal and the second LRR signal is greater than or equal to an operating frequency bandwidth of an MRR signal. transmitting, by a radar, a first long range radar, LRR, signal, and receiving a first echo signal corresponding to the first LRR signal; transmitting, by the radar, a second LRR signal, and receiving a second echo signal corresponding to the second LRR signal, wherein the first LRR signal and the second LRR signal are sawtooth waves with linear increase in frequency; and simulating, by the radar, a measurement of a medium range radar, MRR, based on the first echo signal and the second echo signal, wherein the radar generates the MRR signal, and separately calculates a first frequency difference signal (Δ f 1) between the first LRR signal and the MRR signal, and a second frequency difference signal (Δ f 2) between the second LRR signal and the MRR signal, obtaining, by the radar, based on the first echo signal and the first frequency difference signal (Δf1), a third echo signal corresponding to the MRR signal, and obtaining based on the second echo signal and the second difference signal (Δ f 2), a fourth echo signal corresponding to the MRR signal, obtaining an intermediate frequency IF1 based on the third echo signal and the MRR signal, and obtaining an intermediate frequency IF2 based on the fourth echo signal and the MRR signal; obtaining, by the radar, a final intermediate frequency based on the IF1 and the IF2, and performing a radar measurement based on the final intermediate frequency, wherein a frequency span (ΔF) between the first LRR signal and the second LRR signal is greater than or equal to an operating frequency bandwidth of an MRR signal.