批量读取ASCII转TIFF，比较省时省力的方法，用Arcgis得二十几分钟。-Volume to read ASCII turn TIFF comparison-saving effort, with Arcgis of twenty minutes.

1. BPSK modulation of data which ever you input (default data is “MANIPAL REDDY”). 2. MANIPAL REDDY is changed into ASCII Format and into two-bit format for BPSK Modulation. 3. Chaos is used for spreading the binary bit sequence. 4. Uniform