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单选题 下列关于离散时间因果稳定系统说法错误的是 ( )
学科：信号分析与处理 （电气21级）
时间：2023-11-05 15:07:38
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题目1单选题
某因果LTI系统的系统函数<img src="https://tihai-oss-cloud.itihey.com/img/771e83ca7f2980e0c907662c5992e066.png">,则其收敛域为 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/15e73801a2e6ec915ad44240fd7fa3b1.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/a4ba1c280eca401ab5694063ae6ca03b.png"><img src="https://tihai-oss-cloud.itihey.com/img/30cc3792f58f1e4f7e4e2ab5a08df5ee.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/2bfac482363adf81ccb2cde4489976f9.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/0785fd302134dfc2958341cc64361bbf.png">
题目2单选题
序列<img src="https://tihai-oss-cloud.itihey.com/img/11f7f6245bc6240be82017a0bb520481.png">的z变换<img src="https://tihai-oss-cloud.itihey.com/img/51eef25e8a5b80dd1e7015d2e472b20e.png">,收敛域<img src="https://tihai-oss-cloud.itihey.com/img/77e220d1d54a1e3cb11aac2a34047e08.png">,则此序列<img src="https://tihai-oss-cloud.itihey.com/img/11f7f6245bc6240be82017a0bb520481.png">为 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/523c66fff71d54b578a5a2efe1374a38.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/c6d5f3a96e0fad7df5703b65d1879006.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/fdb11cbe7b8dcf167222cc94ec6b223c.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/16e05a7fd72018d418fb1388656f1e6e.png">
题目3单选题
下列关于离散时间因果稳定系统说法错误的是 ( )A. 系统函数的收敛区间包括单位圆B. 系统函数的收敛区间包括z=∞C. 系统的单位冲激响应为因果序列D. 系统函数的极点可以在单位圆外
题目4单选题
<img src="https://tihai-oss-cloud.itihey.com/img/55ab23096cb0efa9f324b110acb2312f.png">,<img src="https://tihai-oss-cloud.itihey.com/img/40e869096bfddf4c55180a3ff937d881.png">,<img src="https://tihai-oss-cloud.itihey.com/img/b90b6e0c42cb4049a0aef06287c3b6d4.png">的z变换代数表达式为 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/449804847e0b8e7fdedea54d6021619b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/3d75762317c0117a9d0f0659fdbc8415.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/b35dce599b834d1ec0805d75bc56bdb5.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/b99988672aca993b437f96521172e314.png">
题目5单选题
序列<img src="https://tihai-oss-cloud.itihey.com/img/eac7e3a6737cedc2422e0733481855a7.png">的z变换<img src="https://tihai-oss-cloud.itihey.com/img/c063f27530e8daf3ddc345ae88298ac3.png">的收敛域 ( )A. 不存在B. <img src="https://tihai-oss-cloud.itihey.com/img/3b5a8d6f2ab331cd5d3be18fdffcda90.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/e32d7c34a7f9a3cbd07e76afcbea525d.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/15e73801a2e6ec915ad44240fd7fa3b1.png">
题目6单选题
某离散时间LTI系统的系统函数<img src="https://tihai-oss-cloud.itihey.com/img/4dc081caf876b2478a800819aee6e4b2.png">,要使系统因果稳定,参数<img src="https://tihai-oss-cloud.itihey.com/img/69a48fefd33cd6160c31522a819600e5.png">应满足 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/161f4a0c66d19b076b75a30baa8692fe.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/cba9fd84da55c14cf9d02cc4920a1b1b.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/934ecec5fee9a186043e1634215a2fd7.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/2284658d8bd63ca6befedf242a98db36.png">
题目7单选题
序列<img src="https://tihai-oss-cloud.itihey.com/img/7ce7d31d3452aaf34078ce92e6abe8f8.png">的z变换代数表达式为A. <img src="https://tihai-oss-cloud.itihey.com/img/e0ba9e7b168f8c5cfb8277911acef64a.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/fe9702ae8235168378a0a2b084f08a5f.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/80fe81608320556424758fa54356364d.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/cfbbff1c6d813126f354211aa2c41deb.png">
题目8单选题
某离散时间LTI系统的单位冲激响应<img src="https://tihai-oss-cloud.itihey.com/img/30b77ad3e715d18ffefb30740e838ae1.png">,其系统函数为 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/1288796de2f559139a27efe5002f7a5a.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/7faea0c937230a2a30ee633f9d9ca236.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/8232be7002519a61eba0b77a41ec9de9.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/064b544bd542ea18ce760c460011930e.png">
题目9单选题
已知<img src="https://tihai-oss-cloud.itihey.com/img/79ba98d2217335b042db1bcaa493d69b.png">,ROC:<img src="https://tihai-oss-cloud.itihey.com/img/b1fd7f34da3c5ddfe5396710c3b349d3.png">,<img src="https://tihai-oss-cloud.itihey.com/img/c063f27530e8daf3ddc345ae88298ac3.png">的反变换<img src="https://tihai-oss-cloud.itihey.com/img/11f7f6245bc6240be82017a0bb520481.png">为 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/ed1b3be8e9c91a0383ff5e9caec84fa8.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/4ee5a14208e544eba26c38ec20c320a7.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/0b89ec060ad37ebcc9038c090378f0bd.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/b82ffe2224e07b75b78ed02397c02c9c.png">
题目10单选题
序列<img src="https://tihai-oss-cloud.itihey.com/img/068628fbefde8a3c78861ee979c28a49.png">的z变换<img src="https://tihai-oss-cloud.itihey.com/img/c063f27530e8daf3ddc345ae88298ac3.png">的收敛域 ( )A. 不存在B. <img src="https://tihai-oss-cloud.itihey.com/img/3b5a8d6f2ab331cd5d3be18fdffcda90.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/15e73801a2e6ec915ad44240fd7fa3b1.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/e32d7c34a7f9a3cbd07e76afcbea525d.png">
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