| 网格编码矢量量化在SAR原始数据压缩中的应用 |
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| 引用本文： | 谢海慧,黄顺吉.网格编码矢量量化在SAR原始数据压缩中的应用[J].信号处理,2004,20(1):63-67. |
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| 作者姓名： | 谢海慧 黄顺吉 |
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| 作者单位： | 电子科技大学电子工程学院701-4教研室,成都,610054 |
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| 摘 要： | 本文提出了一种结合传统的块自适应量化与网格编码矢量量化对SAR原始数据进行压缩的方法。首先对SAR原始数据实施块自适应量化以减小数据的动态范围,然后对块自适应量化后的数据进行网格编码矢量量化。该方法在考虑了SAR原始数据特性的基础上较好地利用了矢量的空间相关性和信号的时间相关性,进一步提高了量化增益。仿真结果表明,该方法在SAR原始数据的压缩中取得了很好的效果。
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| 关 键 词： | 合成孔径雷达 数据压缩 块自适应量化 网格编码矢量量化 |
| 修稿时间： | 2003年2月8日 |
Application Of TCVQ at SAR Raw Data Compression |
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| Xie Haihui Huang Shunji.Application Of TCVQ at SAR Raw Data Compression[J].Signal Processing,2004,20(1):63-67. |
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| Authors: | Xie Haihui Huang Shunji |
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| Abstract: | combining with traditional BAQ, A new method which utilizes TCVQ in SAR raw data compression is proposed. First, block adaptive quantization of raw data is implemented to reduce the data dynamic range. And then, TCVQ is applied in the data after BAQ. based on the SAR raw data characteristic, This method utilizes not only the spatial correlation of vector, but also time correlation of signal, quantization benefit is further improved. Simulation states this method has advantages in SAR raw data compression. |
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| Keywords: | Synthetic Aperture Radio Data Compression Block Adaptive Quantization Trellis Coded Vector Quantization |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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