RDSS Transmission Delay Random Number Generation Method Based on Kernel Estimation
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Graphical Abstract
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Abstract
BeiDou satellite navigation system adopts RNSS and RDSS dualmode structure system, which not only has the navigation, positioning and timing functions of GPS and other systems, but also provides bidirectional short message information service, which has a very wide potential application in many civil fields. Transmission success rate and transmission delay are two important performance parameters of BeiDou short message. These two performance parameters are urgently needed as reference for the promotion and application of BeiDou short message technology in various industries and the construction of related systems. This paper tests the communication performance of BeiDou short message, proposing a method based on the kernel density estimation in order to establish the Beidou short message transmission delay probability model and generate the delay pseudorandom number. The kernel density of Beidou RDSS measured time delay is estimated by MATLAB and the probability density estimation curve is drawn. The probability density function of the time delay is obtained by fitting the probability density estimation curve with multiple normal distributions. The rejection method realizes the generation of the pseudorandom number of the Beidou RDSS transmission delay.
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