请教基本DEM数据文件BIL格式的数据结构

<P>bil格式打开的内容如下：请那个高手帮我解释一下其中的意义</P>
<P>00000000h: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00; ................</P>
<P>00000000h: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00; ................</P>