请问反应谱如何转换成功率谱？有程序吗

看看这个帖子： <a href="http://www.pudn.com/downloads140/doc/detail605708.html
" _src="http://www.pudn.com/downloads140/doc/detail605708.html ">http://www.pudn.com/downloads140/doc/detail605708.html </a>或者以下资料： <img style="font-family:宋体, SimSun;font-size:14px;vertical-align: middle; margin-right: 2px;" src="http://www.jishulink.com/platform/static/ueditor/dialogs/attachment/fileTypeImages/icon_pdf.gif"/><a style="font-family:宋体, SimSun;font-size:14px; color:#0066cc;" href="http://oss.jishulink.com/upload/201701/1483232628855_从反应谱求功率谱的精确方法及其应用.pdf" title="从反应谱求功率谱的精确方法及其应用.pdf">从反应谱求功率谱的精确方法及其应用.pdf</a><img style="font-family:宋体, SimSun;font-size:14px;vertical-align: middle; margin-right: 2px;" src="http://www.jishulink.com/platform/static/ueditor/dialogs/attachment/fileTypeImages/icon_pdf.gif"/><a style="font-family:宋体, SimSun;font-size:14px; color:#0066cc;" href="http://oss.jishulink.com/upload/201701/1483232631003_地震动功率谱与反应谱的转换关系_赵凤新.pdf" title="地震动功率谱与反应谱的转换关系_赵凤新.pdf">地震动功率谱与反应谱的转换关系_赵凤新.pdf</a><img style="font-family:宋体, SimSun;font-size:14px;vertical-align: middle; margin-right: 2px;" src="http://www.jishulink.com/platform/static/ueditor/dialogs/attachment/fileTypeImages/icon_pdf.gif"/><a style="font-family:宋体, SimSun;font-size:14px; color:#0066cc;" href="http://oss.jishulink.com/upload/201701/1483232635161_地震反应谱_功率谱以及傅立叶谱关系探讨.pdf" title="地震反应谱_功率谱以及傅立叶谱关系探讨.pdf">地震反应谱_功率谱以及傅立叶谱关系探讨.pdf</a>