CAJ | 학술논문

针对RWR/ESM中瞬时测频( IFM)无法对相位编码信号脉内参数进行测量的问题，提出了一种对载频的估计方法和两种对码元的估计方法。通过采用高采样率ADC采样、解模糊、平滑和取均值的处理流程对信号载频进行估计；利用相位跳变和相干解调两种方法分别对码元进行估计。仿真结果证明了上述方法对载频和码元估计的有效性。在对码元的估计中：相位跳变法实时性好，但需要一定的先验知识；相干解调法不需要任何先验知识，但实时性不好。所得结论对工程应用研究具有一定参考价值。
침대RWR/ESM중순시측빈( IFM)무법대상위편마신호맥내삼수진행측량적문제，제출료일충대재빈적고계방법화량충대마원적고계방법。통과채용고채양솔ADC채양、해모호、평활화취균치적처리류정대신호재빈진행고계；이용상위도변화상간해조량충방법분별대마원진행고계。방진결과증명료상술방법대재빈화마원고계적유효성。재대마원적고계중：상위도변법실시성호，단수요일정적선험지식；상간해조법불수요임하선험지식，단실시성불호。소득결론대공정응용연구구유일정삼고개치。
According to the problem that instantaneous frequency measurement(IFM) of RWR/ESM system is unable to measure parameters of phase coded signals, a method for estimating carrier frequency and two methods for estimating code element are proposed. Through sampling with high sampling rate ADC,resolving ambiguity, excluding phase jump punctuation and averaging,carrier frequency is obtained. By making use of two estimation methods based on phase jump and coherent demodulation,code element is estimated. Simula-tion results show that those methods are efficient to estimate carrier frequency and code element. Estimation method based on phase jump of code element is good in real time, but needs transcendental information. Co-herent demodulation is opposite. The conclusions have reference value for the engineering and study.