对噪声中的正弦信号的频率估计，使用Pisarenko谐波分解，MUSIC，ESPRIT（TLS），ESPRIT四种算法-the frequency estimation of sinusoidal signals in noise, using Pisarenko harmonic decomposition, MUSIC, ESPRIT (TLS), ESPRIT
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002110s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.089401s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.006237s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002164s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002141s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003685s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002018s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003286s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015443s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002302s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 4670 [ RunTime:0.001214s ]
