4/1/2023 0 Comments Pdf decompressorA new weight adaptive regulation method based on Kalman filter and hidden Markov model is proposed, and then a new attitude algorithm is constructed by the integration of that method with recursive quaternion estimation algorithm. It has been proved that the weight assigned to the outputs of gyroscope determines the overall performances of attitude algorithm. Finally, they introduce attack prevention, detection, and response measures specifically designed for DER integration across cyber, physical device, and utility layers of the future smart grid.Īn attitude algorithm is used by a given magnetic and inertial measurement unit (MIMU) for weight fusion of the outputs of gyroscope and the outputs of the subunit constructed by accelerometer and magnetometer for attitude calculation of a rigid body. Next, they summarise important attack scenarios against DER, propose a systematic DER resilience analysis methodology, and develop effective and quantifiable resilience metrics and design principles. Specifically, the authors discuss the architecture of the cyber-physical power system with a high penetration of DER and analyse the unique cybersecurity challenges introduced by DER integration. This study proposes a holistic attack-resilient framework to protect the integrated DER and the critical power grid infrastructure from malicious cyberattacks, helping ensure the secure integration of DER without harming the grid reliability and stability. These devices have a significant dependency on digital communication and control, which presents a growing risk from cyber-attacks. A more optimized implementation would allocate those objects/ arrays once per decompressor and reuse them across blocks.The increased penetration of distributed energy resources (DER) will significantly increase the number of devices that are owned and controlled by consumers and third-parties. This is not strictly necessary because the memory usage for this feature is bounded and relatively small. My implementation dynamic allocates and deallocates memory for each dynamic Huffman block, for the sake of clarity. While this project provides a compliant implementation, my code runs slowly so it should be used as an educational tool only. Deflater, Python has zlib, and zlib is available for C. Test vectors for the decompressor, using the JUnit testing framework.ĭEFLATE is popular enough that essentially every important programming language has a library for it. It handles the gzip headers and footers, and uses the functionality Decompressor for the main data processing.Ī very stripped-down copy of classes from my reference Huffman coding project. GzipDecompress, which is a command line program that decompresses a gzip file. The project package includes these main items:ĭecompressor, which provides a library function to decompress a raw DEFLATE data stream (having no headers or wrappers). Source codeīrowse the projectâs source code at GitHub: The gzip container format is specified in RFC 1952 ( plain text or PDF). The format has widespread use, and can be found in protocols and file formats such as ZIP, gzip, PNG, HTTP, and Git. The DEFLATE format is a compression standard specified in RFC 1951 in the year 1996. Consequently, the codebase optimizes for readability and avoids fancy logic, and does not target the best speed/memory/performance. The code can be used for study, and as a solid basis for modification and extension. It is provided in Java, Python, C++, TypeScript, and is open source. This project is a clear implementation of an inflater for the DEFLATE compression format in less than 1000 lines of well-commented code, suitable as a reference for educational purposes.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |