Time-variant underwater acoustic channel capacity simulation model

Abstract

The invention discloses a time-variant underwater acoustic channel capacity simulation model. The time variant underwater acoustic channel capacity simulation model comprises a storage module for storing various parameters, a reading module for reading the various parameters stored in the storage module, a large-scale module for obtaining random channel parameters subjected to large-scale transformation through first-order AR transformation, a multipath channel processing module for obtaining path information of multiple paths of the random channel parameters based on a ray tracing model, a screening module for screening out three to ten important paths, a small-scale module for calculating small-scale attenuation coefficients of multiple micro-paths according to small-scale parameters, a Doppler module for processing Doppler parameters to calculate an effective Doppler matrix, a channel transmission function generating module for obtaining a total channel transmission matrix of a multipath time delay acoustic channel according to comprehensively-obtained various parameter, and a channel capacity processing module for conducting processing transformation on channel transmission functions in the total transmission matrix and obtaining pulse response, channel gain and channel capacity of the acoustic channel through calculation.

Description

technical field [0001] The invention relates to the field of underwater acoustic communication, in particular to a time-varying underwater acoustic channel capacity simulation model. Background technique [0002] With the implementation of the grand strategy of ocean development and the actual needs of maritime military operations, the demand for information transmission using underwater acoustic channels has greatly increased. The purpose of underwater acoustic communication is to transmit information from the source to the destination through the underwater acoustic channel in a high-speed and reliable manner. As a very important factor to measure the condition of the underwater acoustic channel, the capacity of the underwater acoustic channel has great research significance and value. At present, the calculation of underwater acoustic channel capacity mainly includes two methods: field measurement and computer simulation modeling. [0003] Field measurement is the most d...

AI Technical Summary

Problems solved by technology

Moreover, various parameters such as the sea surface reflection coefficient are based on a relatively ideal marine environment, which will cause large errors in theoretical calculation results and actual measurement results.

Images