時間序列工具箱 ,內(nèi)含雙譜,AR模型參數(shù)估計程序
上傳時間: 2015-02-08
上傳用戶:米卡
功率譜估計的應(yīng)用范圍很廣,在各學(xué)科和應(yīng)用領(lǐng)域中受到了極大的重視。在《現(xiàn)代信號處理》課程中講述了經(jīng)典譜估計和現(xiàn)代譜估計這兩大類譜估計方法;經(jīng)典譜估計是基于傅立葉變換的,雖然具有運(yùn)算效率高的優(yōu)點(diǎn),但是頻譜分辨率低同時旁瓣泄漏嚴(yán)重,對長序列有著良好的估計。為了克服經(jīng)典譜估計的缺點(diǎn),人們開展了對現(xiàn)代譜估計方法的研究。現(xiàn)代譜估計是以隨機(jī)過程的參數(shù)模型為基礎(chǔ)的,有最大似然估計法、最大熵法、AR模型法、預(yù)測濾波器法。現(xiàn)代譜估計對短序列的估計精度高,同經(jīng)典譜估計互為補(bǔ)充。在認(rèn)真學(xué)習(xí)了現(xiàn) 代譜估計方法后,我選擇了現(xiàn)代譜估計中的AR模型法的仿真作為題目。下面給出AR模型的相關(guān)理論和仿真實(shí)現(xiàn)。
標(biāo)簽: 功率譜估計
上傳時間: 2013-12-25
上傳用戶:yepeng139
現(xiàn)代譜估計用萊文森-德賓(Levinson-Durbin)算法求解尤利-沃克(Yule-Walker)方程。 形參說明: r:雙精度實(shí)型一維數(shù)組,存放Yule-Walker方程的元素r(0),r(1),...r(p)。 p:AR模型階數(shù)。 a:AR模型系數(shù)a(0),a(1),...a(p)。 v:預(yù)測誤差功率
標(biāo)簽: Levinson-Durbin Yule-Walker 譜估計 算法
上傳時間: 2014-01-26
上傳用戶:ippler8
在線簽名鑒定,內(nèi)含AR實(shí)現(xiàn)算法和DTW算法源程序,并擁有應(yīng)用實(shí)例
標(biāo)簽:
上傳時間: 2013-12-24
上傳用戶:風(fēng)之驕子
使用維納濾波器對信號進(jìn)行處理,得到噪聲狀況下的信號,這個濾波器是數(shù)字信號處理中非常經(jīng)典的一個。代碼里還提供了維納的AR參數(shù)估計
上傳時間: 2015-06-02
上傳用戶:royzhangsz
atmel at91sam7s header file extented, some extra register definitions are set and extra functions are dinifined
標(biāo)簽: extra definitions functions extented
上傳時間: 2015-07-10
上傳用戶:gmh1314
模式識別中的在線簽名鑒定,包括AR實(shí)現(xiàn)算法,DTW算法及應(yīng)用實(shí)例。很好用
標(biāo)簽: 模式識別
上傳時間: 2015-07-13
上傳用戶:kr770906
zemax源碼: This DLL models an anamorphic aspheric surface. This surface is essentially an even aspheric surface with different terms for the x and y directions. The sag is given by: Z = ((CX*x*x)+(CY*y*y)) / (1 + sqrt(1-((1+KX)*CX*CX*x*x)-((1+KY)*CY*CY*y*y))) + AR*( (1 - AP)*x*x + (1 + AP)*y*y )^2 + BR*( (1 - BP)*x*x + (1 + BP)*y*y )^3 + CR*( (1 - CP)*x*x + (1 + CP)*y*y )^4 + DR*( (1 - DP)*x*x + (1 + DP)*y*y )^5 Note the terms AR, BR, CR, and DR ... have units of length to the -3, -5, -7, and -9 power. The terms AP, BP, CP, and DP are dimensionless. The surface is rotationally symmetric only if AP = BP = CP = DP == 0 and CX = CY and KX = KY.
標(biāo)簽: surface This essentially anamorphic
上傳時間: 2015-07-25
上傳用戶:lht618
· Develop clear, readable, well-documented and well-designed programs in the C Programming Language. · Develop software in the Unix/Linux using tools such as gcc, gdb, and make. · Locate and interpreting “man pages” applicable to application-level system programming. · Use the POSIX/Unix API to system functions to manage process and sessions as well as use signals and pipes for inter-process communication. · Understanding how synchronization might become problematic in light of concurrency. · Understand how to communicate and cooperate with a project partner.
標(biāo)簽: well-documented well-designed Programming Language
上傳時間: 2015-08-16
上傳用戶:yuchunhai1990
This paper deals with the problem of speech enhancement when a corrupted speech signal with an additive colored noise is the only information available for processing. Kalman filtering is known as an effective speech enhancement technique, in which speech signal is usually modeled as autoregressive (AR) process and represented in the state-space domain.
標(biāo)簽: speech with enhancement corrupted
上傳時間: 2015-09-07
上傳用戶:zhangyi99104144
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