CAJ | 학술논문

新近提出的δ相关检测/解扩方案，较经典相关检测/解扩方法在同步条件下其计算量减少了99.61%，抗干扰能力提高了2~3个数量级。然而，广泛应用的经典匹配滤波扩频码同步门限检测方法的计算量太大，抗干扰能力不足，当干扰较强时，难以提供有效同步扩频码序列。为了发挥δ相关检测/解扩方案的潜在抗干扰能力，提出了δ匹配滤波扩频码同步门限检测方案。仿真分析表明，所提方案较经典匹配滤波扩频码同步门限检测方法，计算量减小了99.61%，在输入SNR (-0~-20 dB)+sf256条件下，平均误同步率降低了1~2个数量级。
신근제출적δ상관검측/해확방안，교경전상관검측/해확방법재동보조건하기계산량감소료99.61%，항간우능력제고료2~3개수량급。연이，엄범응용적경전필배려파확빈마동보문한검측방법적계산량태대，항간우능력불족，당간우교강시，난이제공유효동보확빈마서렬。위료발휘δ상관검측/해확방안적잠재항간우능력，제출료δ필배려파확빈마동보문한검측방안。방진분석표명，소제방안교경전필배려파확빈마동보문한검측방법，계산량감소료99.61%，재수입SNR (-0~-20 dB)+sf256조건하，평균오동보솔강저료1~2개수량급。
Comparison between the recently-proposed δ correlation detection/despreading scheme and the classical correlation detection/despreading method shows that in synchronous condition, the calculation a-mount is reduced 99. 61% and the anti-jamming ability is increased by 2~3 orders of magnitude. However, the calculation amount of the widely used classical spreading code matched filter synchronization threshold detection method is too large, and the anti-jamming ability is insufficient, when interference is strong, it is difficult to provide effective synchronization spreading code sequence. In order to make the most of potential anti-jamming ability of δ correlation detection /despreading scheme, this paper proposes the δ spreading code matched filter synchronization threshold detection scheme. Simulation and analysis demonstrate that in comparison with the classical matched filtering threshold detection spreading code synchronization method, the calculation amount of the proposed scheme is reduced 99. 61% and the average error synchronization rate is reduced by 1~2 orders of magnitude, in condition of input SNR(-0~-20 dB) +sf256.