An Anti-Jamming Method of UWB Ranging Sensor Based on Equivalent Sampling and Coupled Chaotic Oscillator

Electromagnetic threats the carrier-free ultrawideband (UWB) sensors face cannot be ignored. However, it is difficult to tackle various jamming signals well by using one type of jamming suppression algorithm with the development of jamming technology. To solve this issue, an anti-jamming model based on equivalent sampling and coupled chaotic oscillator is proposed in this letter. First, the echo data is collected by equivalent sampling, which can destroy the jamming features in the time domain. Therefore, it does not require extra attention to the initial jamming form during the signal process. Then an improved coupled chaotic model is used to detect the weak impulses after sampling. The advantage is that it reduces the sample rate and can destroy the original features of the jamming. Higher precision and outstanding robustness are proven according to our experiments.