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- SAR raw signal simulation of oil slicks in ocean environments 海洋环境下油膜的原始SAR信号模拟
- SAR raw signal simulation SAR原始回波仿真
- The traditional compression methods based on the data correlation have not been used to compress SAR raw data, because SAR raw signal lacks the correlated characteristics. SAR原始回波信号的相关性较差,因此基于数据相关性的传统压缩方法对星载SAR回波信号的数据压缩不再实用。
- SAR raw signal; time-domain simulation; shift invariance; templates; multithreading; hybrid coding 关键字:SAR原始数据;时域模拟;平移特性;模板;多线程;混合编码
- A method of the ground object target simulation of SAR(Synthetic Aperture Radar) raw signal was discussed. 分析讨论了一种合成孔径雷达成像三维地物目标模拟的方法。
- Synthetic aperture radar(SAR)is one high resolution radar, and the simulation of raw signal is one important aspect of SAR. 合成孔径雷达是一种高分辨率的雷达体制,原始信号的模拟是合成孔径雷达研制的一个重要方面。
- These caused great difficulties to downlink and store SAR raw data. 这给数据的传输和存储带来了很大的困难。
- radar raw signal simulation 回波仿真
- raw signal simulation 回波仿真
- The dissertation analyzes the source model of SAR raw data and imagery in detail and the baseline theories of quantization and coding are discussed. 论文对SAR原始数据和图像数据信源模型做了较深入的理论分析,并对量化和编码的基本理论做了详细的讨论;
- The echo signal simulation is very important to the study of the SAR system and the imaging methods are the foundation of the technology of Synthetic Aperture Radar (SAR) simulation. 回波信号模拟是合成孔径雷达模拟技术的基础,它在合成孔径雷达系统和成像算法的研究中,具有十分重要的作用。
- Finally, the problem of SAR raw data compression is also studied.Considering the methods of BAQ and VQ, some compression methods are studied and compared. 最后,对SAR的数据压缩进行了研究,在BAQ算法的基础上,结合矢量量化技术,仿真实现了几种数据压缩算法,对这些算法进行了比较分析。
- In this paper,a design method of the SAR raw data real-time compression system is presented which is based on FPGA and adopts the block adaptive quantization(BAQ) algorithm. 文章讨论一种基于FPGA,并采用分块自适应量化(BAQ)算法的SAR原始数据实时压缩处理系统的设计方法,该设计可大大提高实时压缩处理系统的性能,降低数据率,突破卫星下传数据率的限制。
- The Multifunction Doppler Signal Simulator. 多功能的多普勒信号模拟器。
- Based on traditional wavelet transform methods, a Multiwavelet Transform SAR raw data compression method(MWT-BAQ) is presented for the first time in this paper. 首次提出将多小波应用于SAR原始数据压缩,在单小波压缩算法的基础上,提出了多小波压缩算法MWT-BAQ。
- Design of Logging Signal Simulator for CTS. 测井电缆遥测系统信号模拟器的设计
- For the SAR raw data, the dissertation mainly discusses data compression algorithms in the transform domain, such as, algorithms based on the lifting wavelet transform or discrete cosine transform(DCT). 对于SAR原始数据,主要研究了基于变换域的压缩算法,如基于提升小波变换和基于离散余弦变换的量化与编码算法等;
- Because a linear predictor with few taps can capture most of raw signal correlation, the performance of the BAPQ is superior to that of the block adaptive quantization (BAQ). 后者是通过预测编码来消除SAR原始数据之间的相关性从而提高压缩性能。
- Signal simulators many be used in software validation. 可以在软件验证中使用信号模拟器。
- Research on SAR Raw Data Simulation of Complex Scenario 复杂场景的SAR原始数据模拟研究