Frequency hopping synchronization method and system based on TOD
A frequency hopping synchronization and synchronization sequence technology, applied in the field of data link systems, can solve the problems of frequency hopping frequency and TOD information being easily cracked, and achieve the effects of improving anti-interference and confidentiality, not being easy to be stolen, and increasing variability
Active Publication Date: 2022-03-01
RUBAN QUANTUM TECH CO LTD +1
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] Summary of the invention: In order to overcome the problem that the frequency hopping frequency and TOD information are easily cracked in the existing TOD-based synchronous prefix method, the present invention proposes a method based on The frequency hopping synchronization method of TOD, which improves the frequency hopping frequency generation method in the frequency hopping synchronization method. If n frequency hopping is required to transmit the synchronization sequence according to the requirements, the sender generates n frequency hopping for sending the synchronization sequence The frequent method includes the following steps:
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0050] The frequency hopping synchronization method based on TOD information is implemented in the sender and the recipient. In the present embodiment, the sender is A, the recipient is B. The sender and the receiver are equipped with a key card, and the key card stores a symmetric key pool, that is, the sender and the receiver key pool are equal. The key card also stores ID cryptographic public-private key parameters, issued by the key issuance server, the specific steps are as follows:
[0051] The key issuance server first needs to establish a set of ID key-based system parameters, steps below:
[0052] (1) Set Q as a large number, generate G 1 And g 2 , G 1 And g 2 The Q-stage plus cycle group and multiplication cycle group, respectively. Mapping Become a double linear map. Random selection g 1 Generating element P;
[0053] (2) Define the Hash function h: {0, 1} * → g 1 * ;
[0054] (3) Set other system parameters ad_paras;
[0055] (4) Randomly take s∈Z q * As the system ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a frequency hopping synchronization method and system based on TOD, and the method improves a frequency hopping frequency generation method in an existing frequency hopping synchronization method based on TOD, and comprises the following steps: a sender calculates a symmetric key between the sender and a receiver by using n different hash functions to obtain n hash values; a sender obtains TOD information at the current moment, obtains TOD information at the previous n-1 moments at the same step length, and then calculates a random code for the high-order content TODH of each piece of TOD information; and finally, performing joint operation by using the corresponding TODH, the random code and the hash value to calculate n frequency hopping frequencies. According to the method, the TOD information is converted into the random code which cannot be acquired by the enemy, meanwhile, a unique frequency calculation method is designed, every time the TODH is updated, n frequency hopping frequencies change accordingly, one frequency hopping frequency is only used in one period, the variability of the frequency hopping frequencies is increased, the difficulty of cracking the frequency hopping frequencies by the enemy is also increased, and the frequency hopping efficiency is improved. And the anti-interference performance and the confidentiality in the frequency hopping synchronization process are improved.
Description
Technical field [0001] The present invention relates to the field of data chain systems, and more particularly to a TOD-based hopping synchronization method and system. Background technique [0002] The frequency hopping means that the signal carrier does not stop and reaches the purpose of not being predicted by the enemy. The hopping is divided into two steps to frequency hopping synchronization and frequency hopping data. Among them, the frequency hopping synchronization refers to the time point and frequency hopping rules of the two parties, which must be completed in advance before transmitting data. There are approximately four major frequency hopping synchronization methods, which is more important to synchronize stroke. [0003] The current synchronous stroke method is usually based on TOD-based synchronization stroke method. "SIMULINK-based frequency hopping synchronization technology simulation platform design and implementation [D] Dou Xiujuan. Electronic Technology Un...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(China)
IPC IPC(8): H04B1/7156H04B1/7136H04L9/06H04L9/08
CPCH04B1/7156H04B1/7136H04L9/0643H04L9/0869H04L9/0819H04B2001/71563
Inventor富尧钟一民余秋炜
OwnerRUBAN QUANTUM TECH CO LTD