本文關(guān)鍵詞：基于非對(duì)稱sinc函數(shù)擬合的激光測(cè)距算法優(yōu)化　出處：《紅外與激光工程》2017年08期 　論文類型：期刊論文

  更多相關(guān)文章： 激光測(cè)距 高重頻 峰值點(diǎn)檢測(cè) 波形擬合

【摘要】：小型化的高重頻多脈沖激光測(cè)距機(jī)采用數(shù)字化處理確定目標(biāo)距離,接收電路帶寬、數(shù)字化采樣精度以及濾波算法等因素會(huì)影響測(cè)距的精度,文中在對(duì)測(cè)距誤差分析的基礎(chǔ)上提出改進(jìn)測(cè)距精度的算法。首先,在對(duì)激光回波信號(hào)積累以提高信噪比的基礎(chǔ)上,對(duì)回波信號(hào)波形進(jìn)行中心差分處理、斜率閾值和幅度閾值條件處理,剔除偽峰值點(diǎn),初步確定峰值點(diǎn)位置。然后,根據(jù)初定位后的波形特點(diǎn),選擇相應(yīng)的指數(shù)函數(shù)進(jìn)行非對(duì)稱sinc函數(shù)波形擬合修正,估計(jì)波峰點(diǎn)相對(duì)準(zhǔn)確位置,從而輸出較為精確的目標(biāo)距離。最后,將改進(jìn)算法在matlab中仿真,實(shí)驗(yàn)結(jié)果驗(yàn)證了文中提出的修正算法對(duì)提高激光測(cè)距精度的有效性。
[Abstract]:High frequency miniature multi pulse laser rangefinder using digital processing to determine the target distance, receiving circuit bandwidth, sampling precision and digital filtering algorithm will influence the precision of distance measurement, the improved ranging accuracy algorithm is proposed based on analysis of the ranging error. First of all, in the accumulation of the laser echo signal to improve the foundation the signal-to-noise ratio on the center differential processing of the echo signal waveform, amplitude and slope threshold threshold conditions, excluding pseudo peak point, preliminary determine the peak point. Then, according to the waveform characteristics after the initial location, select the index function corresponding to non symmetric sinc waveform fitting correction function, estimation of relative peak the exact location, so as to output a more precise target distance. Finally, the improved algorithm in MATLAB simulation, the experimental results verify the algorithm proposed in this paper to improve the laser measuring The validity of the distance from the precision.

【作者單位】： 鄭州航空工業(yè)管理學(xué)院;鄭州大學(xué)信息工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(61331021) 河南省科技攻關(guān)項(xiàng)目(172102410067,152102210139,144300510059) 航空科學(xué)基金(2014ZC13004) 河南省高�？萍紕�(chuàng)新團(tuán)隊(duì)(17IRTSTHN014)
【分類號(hào)】：TN249
【正文快照】： 0引言目前,便攜式激光測(cè)距機(jī)或測(cè)距望遠(yuǎn)鏡采用10 k Hz以上的高重復(fù)頻率發(fā)射激光信號(hào)[1],可以降低激光器的發(fā)射功率,在探測(cè)器接收時(shí)采用多脈沖的積累提高接收信號(hào)的信噪比,提高作用距離。激光測(cè)距機(jī)的發(fā)射波形因采用的激光器不同而有高斯型、負(fù)拋物線型、sinc函數(shù)型等類型,這些，

本文編號(hào)：1366133