Target Measurement in Radio Frequency Simulation Using Code-Interrupted Transmitting and Receiving of Pulse Signals

The interrupted transmitting and receiving (ITR) has been utilized in radio frequency simulation to conduct target measurement with pulse signal. Because the ITR results in a partly missing pulse signal, spectrum aliasing occurs and the target range profile is difficult to be obtained. Therefore, frequency domain filtering and sparse reconstruction are proposed to recover the target range profile. However, frequency domain filtering is ineffective when the wideband signal is utilized. The calculation of sparse reconstruction is complex and the reconstruction performance may be poor for some cases of ITR parameters. To solve this problem, the code-ITR (code-ITR) of the pulse signal is proposed in this article. First, the ITR sequences are coded according to the duty ratio of each sub-pulse. Second, the echo combination and cancellation are processed to eliminate the false peaks in the range profile of the ITR echo. By using the code-ITR and echo processing method, the range profile can be obtained for target measurement. Simulations and experiments are performed to verify the effectiveness of the proposed method.