CAJ | 학술논문

针对噪声环境下的跳频信号,提出了一种基于稀疏分解的时延估计方法.对跳频信号采用稀疏分解重构进行了研究,在此基础上,在不同天线下对跳频信号分别进行重构,得到每跳信号对应的载波频率和时间中心,从而估计出跳频信号的时延.仿真结果表明,在信噪比大于7 dB时,跳频信号的时延估计误差基本趋近于零,验证了时延估计方法的有效性.
침대조성배경하적도빈신호,제출료일충기우희소분해적시연고계방법.대도빈신호채용희소분해중구진행료연구,재차기출상,재불동천선하대도빈신호분별진행중구,득도매도신호대응적재파빈솔화시간중심,종이고계출도빈신호적시연.방진결과표명,재신조비대우7 dB시,도빈신호적시연고계오차기본추근우령,험증료시연고계방법적유효성.
@@@@For frequency-hopping (FH)signal,a novel method of time delay estimation (TDE)is presented in the noise environment. The FH signals are reconstructed by using the method of sparse decomposition,then,the TDE of the same hop is estimated through the carrier wave and time center of each hop which are obtained when the FH signals are reconstructed in the different antenna respectively. Simulation results demonstrate that the er-ror estimation is near zero when the SNR is greater than 7 dB,so the TDE method is effective.