本文關(guān)鍵詞：基于非對稱sinc函數(shù)擬合的激光測距算法優(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： 激光測距 高重頻 峰值點(diǎn)檢測 波形擬合

【摘要】：小型化的高重頻多脈沖激光測距機(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影響測距的精度,文中在對測距誤差分析的基礎(chǔ)上提出改進(jìn)測距精度的算法。首先,在對激光回波信號積累以提高信噪比的基礎(chǔ)上,對回波信號波形進(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)行非對稱sinc函數(shù)波形擬合修正,估計波峰點(diǎn)相對準(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提高激光測距精度的有效性。
[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) 河南省高校科技創(chuàng)新團(tuán)隊(duì)(17IRTSTHN014)
【分類號】：TN249
【正文快照】： 0引言目前,便攜式激光測距機(jī)或測距望遠(yuǎn)鏡采用10 k Hz以上的高重復(fù)頻率發(fā)射激光信號[1],可以降低激光器的發(fā)射功率,在探測器接收時采用多脈沖的積累提高接收信號的信噪比,提高作用距離。激光測距機(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：1366133