一直时域信号通过matlab求功率,想将计算的时域信号转化为频域信号，请问怎么用MATLAB实现...

该楼层疑似违规已被系统折叠 隐藏此楼查看此楼

这是我计算的不同时刻的压力值，请问怎么样状花为频域信号

0.002583     91.554893

0.002592     97.695251

0.002601     103.19065

0.00261     108.25372

0.002619     115.36359

0.002628     119.08776

0.002637     121.95367

0.002646     123.99062

0.002655     126.58373

0.002664     127.91709

0.002673     126.45813

0.002682     125.14619

0.002691     124.08599

0.0027     122.49818

0.002709     120.18077

0.002718     117.33614

0.002727     114.9413

0.002745     108.03642

0.002754     105.00877

0.002763     102.04819

0.002772     99.648239

0.002781     96.010925

0.00279     93.484398

0.002799     91.13134

0.002808     88.61351

0.002817     85.117172

0.002826     82.120255

0.002835     79.768448

0.002844     77.467606

0.002853     75.218849

0.002862     72.976227

0.002871     70.847137

0.00288     68.687614

0.002889     66.097496

0.002898     63.628593

0.002907     61.407173

0.002916     59.720615

0.002925     57.882866

0.002934     55.823402

0.002943     53.924442

0.002952     54.594177

0.002961     56.812874

0.00297     59.846905

0.002979     63.043098

0.002988     66.74424

0.002997     72.624733

0.003006     79.207001

0.003015     86.661247

0.003024     93.440407

0.003033     99.702324

0.003042     106.07376

0.003051     112.87775

0.00306     120.08591

0.003069     123.94866

0.003078     127.39343

0.003087     130.19083

0.003096     132.80768

0.003105     134.17445

0.003114     133.05589

0.003123     131.20358

0.003132     128.65956

0.003141     126.17339

0.00315     123.63111

0.003159     120.4606

0.003168     117.5395

0.003177     114.54745

0.003186     110.74805

0.003195     107.46087

0.003204     104.12388

0.003213     101.32385

0.003222     97.38575

0.003231     94.313362

0.00324     91.509148

0.003249     89.040314

0.003258     85.93618

0.003267     82.706017

0.003276     79.784447

0.003285     77.112961