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Ó¦ÓÃÎïÀíѧרҵÂÛÎÄ·¶ÎÄ Ä¿Â¼ ÖÐÎÄÕªÒªi Ó¢ÎÄÕªÒªii Ŀ¼iii µÚÒ»Õ Ð÷ÂÛ 1 1.1ÑÜÉäÏÖÏóµÄ¸ÅÄî 1 1.2ÑÜÉäÀíÂ۵ļòµ¥¸ÅÊö 1 1.3ÑÜÉäµÄÓ¦Óà 1 1.4±¾ÎĵÄÖ÷Òª¹¤×÷ 1 µÚ¶þÕ ÑÜÉäÀíÂ۵Ļù±¾ÀíÂÛ3 2.1 »Ý¸ü˹ԭÀí3 2.2 »Ý¸ü˹-·ÆÄù¶úÔ­Àí3 2.3°ë²¨´ø·¨¼°Ê¸Á¿·ÖÎö·½·¨ 5 2.4»ù¶û»ô·òÑÜÉ乫ʽ 6 2.5ÊýÖµ·ÖÎö½á¹û 7 µÚÈýÕ ²¨¶¯·½³ÌÊýÖµ·½·¨9 3.1 ²¨¶¯·½³ÌµÄ²î·Ö 9 3.2 ÊýÖµ¼ÆËãÄ£ÐÍ10 3.3 ½á¹û±È½Ï11 µÚËÄÕ ½áÂÛ12 ²Î¿¼ÎÄÏ×13 ÖÂл14 ¸½Â¼15 Õª Òª ±¾ÎIJûÊöÁËÑÜÉäµÄ»ù±¾ÀíÂÛ,²¢ÓÃÊýÖµ·½·¨½øÐÐÁËÑо¿ºÍ̽ÌÖ.Ê×ÏȶԻù¶û»ô·òÑÜÉ乫ʽ½øÐÐÖ±½ÓµÄÊýÖµ»ý·Ö,µÃµ½¸ÃÀíÂÛϵÄÑÜÉ䳡·Ö²¼.È»ºó¶Ô²¨¶¯·½³ÌÖ±½Ó²î·Ö²¢½øÐÐÊýÖµÇó½â,»ñµÃÑÜÉ䳡µÄ·Ö²¼Í¼Ïñ.²¨¶¯·½³ÌµÄÖ±½ÓÇó½âÌṩÁËÒ»ÖÖÊýֵʵÑéµÄÊÖ¶Î.Ϊ±ãÓڱȽÏ,Á½ÕßÈ¡ÏàͬµÄ¼ÆËãÍø¸ñ.¼ÆËã½á¹û±íÃ÷,Á½ÕߵļÆËã½á¹û»ù±¾Ò»ÖÂ. ¹Ø¼ü×Ö£ºÑÜÉäÀíÂÛ ²¨¶¯·½³Ì ÊýÖµ·ÖÎö Abstract This article elaborated the diffraction elementary theory, and has conducted the research and the discussion with the numerical method. First carries on the direct numerical integration to the Jierhuofu diffraction formula, obtains under this theory diffraction field distribution. Then and carries on the value to the wave equation direct difference to solve, obtains the diffraction field the distributed image. Wave equation's direct solution has provided one value experiment's method. In order to be advantageous for the comparison, both take the same computation grid. The computed result indicated that both's computed result basic consistent. Keywords£ºDiffraction theory Wave equation Numerical Analysis
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