一種自適應(yīng)跳頻中的干擾檢測(cè)算法

為提高跳頻通信系統(tǒng)的可靠性和穩(wěn)定性，根據(jù)線性數(shù)字調(diào)制信號(hào)的特點(diǎn)，對(duì)信號(hào)進(jìn)行非線性變換，應(yīng)用變換后信號(hào)的功率譜密度中所包含的信號(hào)特征信息，提出了一種適合于自適應(yīng)跳頻的干擾檢測(cè)算法。該算法基于貝葉斯決策理論，屬于盲信干(信噪)比檢測(cè)。仿真結(jié)果表明，該算法滿足跳頻通信系統(tǒng)的要求。To improve the reliability and stability of FH communications, nonlinear transforms are used according to the properties of linear modulated digital signals. Based on the information included in the PSD of the transformed signals, an algorithm for detecting interferences applied to adaptive FH is proposed. The algorithm is based on Bayesian decision-making, which belongs to blind detection of signal-to-interference ratio (SIR) and signal-to-noise ratio (SNR). The simulation results show that the algorithm meets the requirements of FH communication systems.