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Why VLF signal cannot penetrate ionosphere? 


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VLF signals cannot penetrate the ionosphere due to the complex and uneven electromagnetic anisotropy of the ionosphere, which affects the accuracy of the model calculation . The ionosphere is an arbitrary anisotropic medium, and there is no good algorithm to deal with its electromagnetic anisotropy . The accuracy of VLF propagation models is affected by this lack of algorithm . The ionospheric stratification model, which considers factors such as electron density, stratification, and geomagnetic field, can help improve the accuracy of VLF communication predictions . VLF signals collected by a single receiver reflect the average path condition and are not sensitive to where the electron density change occurs along the propagation path . To monitor the spatial extent of space weather events that disturb the lower ionosphere, a network of VLF receivers is required .

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The paper does not provide an answer to the query. The paper discusses the propagation features of LF radio waves at the topside ionosphere and their variations possibly related to the Wenchuan earthquake in 2008. It does not specifically address why VLF signals cannot penetrate the ionosphere.
The provided paper does not explicitly mention why VLF signals cannot penetrate the ionosphere.
The provided paper does not directly address the question of why VLF signals cannot penetrate the ionosphere.
The paper does not provide an answer to the query. The paper is about a model study on VLF electromagnetic scattering in the anisotropic ionosphere.
The paper does not provide an answer to the query. The paper is about a model study on VLF electromagnetic scattering in the anisotropic ionosphere.

Related Questions

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