摘要: The incoherent scatter radar (ISR) technique provides an efficient tool for measuring ionosphere parameters from D region to the upper F region. The conventional methods find the autocorrelation function first and then calculate t... 展开 The incoherent scatter radar (ISR) technique provides an efficient tool for measuring ionosphere parameters from D region to the upper F region. The conventional methods find the autocorrelation function first and then calculate the scattering spectrum estimation with Fourier transform. In this paper, we deal with the alternating code with a modified parameter model-based spectrum estimation method. Based on the weighted revising to the ambiguity function and sign correction to different sub-code of alternating code, the AR model is used to represent the autocorrelation function. Finally the scattering spectrum with high-resolution is obtained by a long-time accumulation. Experiments on the real data demonstrate the validity of the presented method. 收起