laser echo 中文意思是什麼
laser echo
解釋
激光回波-
In order to improve the ranging accuracy of a lidar, the effect of amplitude and width of the echo signal on the ranging accuracy of a lidar with bell - type laser pulses in temporal domain and gaussian pulses in spatial domain, was studied under the condition of constant - voltage - amplitude discrimination
摘要為了提高脈沖激光雷達的測距精度，研究了光束在空域為高斯光束、時域為鐘型脈沖的激光雷達在恆電壓幅度鑒別模式下，回波信號幅度變化和寬度變化對測距精度的影響。 -
Abstract : the threshold algorithm of the target detection is often used to detect target echo signals. its performance is based on signals - noise ratio. when signals - noise ratio is great than 6. 7, the target can be detected. in order to increase the signals - noise ratio, matching filter is often used. if the system is narrow band system, the noise is color noise and matching filter cannot be used. therefore, the signals - noise ratio cannot be increased. however, the geometrical characteristic of the laser echo signal is different with the noise. this paper advises the algorithm that detects the target by the geometrical characteristic. when signals - noise ratio is great than 2, this algorithm can detect target. this algorithm has been used in practice
文摘:目標檢測的閾值法經常用於檢測目標的回波信號.它的性能取決于信噪比，當信噪比大於6 . 7時，能夠檢測出目標.為了提高信噪比，經常採用匹配濾波器.如果系統是窄帶系統，噪聲為色噪聲，無法使用匹配濾波器，不能提高信噪比.激光回波信號的幾何特徵不同於噪聲.提出了一種利用這種幾何特徵檢測目標的演算法.當信噪比大於2時，該演算法能夠檢測出目標.該演算法已經實際應用 -
The models of the laser emitting subsystem, the pin photoelectric receiving subsystem and the apd echo receiving subsystem of the laser system for identifying & communicating presented
本文對激光識別與通信系統的激光發射子系統、 pin光電接收子系統和apd回波接收子系統建立了數學模型。 -
The factors that influence the laser echo rate are analyzed in this paper and then elucidated that the application of this principle improved the echo rate greatly. 4
從對目標坐標測定儀中激光回波率的分析入手，闡明了應用圖像取差原理極大地提高了測距系統的回波率的原因。 -
To solve the laser weak echo detection under the clutter background, a dynamic programming ( dp ) technique has been developed for the detection of weak targets
摘要為解決低信噪比下激光微弱回波的檢測問題，提出了一種新的小目標檢測演算法。 -
In the paper the methods to process weak echo by using dsp technology based on low snr of laser weak echo are presented. and the methods are simulated and calculated
摘要文章針對激光弱小回波信號的低信噪比，提出了運用數字信號處理技術對回波信號進行處理的方法，並進行了一系列模擬和計算。 -
The article has a deep study on test control technique and echo processing methods for improving the ranging precision of 3 - d laser scanner
本文對三維激光掃描儀的測控系統技術及通過對回波信號進行處理來提高測距精度的方法進行了深入的研究。 -
The primary advantages of dp are its sensitivity to weak targets along with its robustness to laser echo glitter
採用動態規劃方法克服了低信噪比下激光回波閃爍對目標檢測的影響。 -
To solve the weak target detection under the clutter background, combined with dynamic chaotic model, the chaotic property of the laser echo signal is discussed and a novel algorithm is presented based on chaotic signal detection using neural network predictor
摘要為了解決雜波背景下的激光微弱目標檢測的問題，結合混沌動態建模思想，討論了激光回波的混沌特性，提出激光信號非線性混沌序列的神經網路建模、預測及信號檢測演算法。 -
Using those echo data processing way, boost the precision of the 3 - d laser scanner result
通過這些回波分析的方法，提高了三維激光掃描儀的掃描精度。
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