- This article mainly describes the concept and principle of encoding in the first and second chapters. The third chapter mainly describes Adaptive Differential Pulse Code Modulation (ADPCM) algorithm, adaptive quantizing and adaptive predicting algorithm.
- One is adaptive quantization, and anther is adaptive prediction.
- Norm distribution is the basis of Block Adaptive Quantization (BAQ) algorithm.
- The exact value of gain is calculated and quantized.Fixed quantization is used in adaptive codebook and adaptive quantization is used in fixed codebook.
- 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.
- 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).