- Because coefficients match Laplacian distribution after classification based on their acitivity prediction, a context based classification and adaptive quantizer(CBCAQ) is used to them.
- 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).