红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2014年
5期
1458-1462
,共5页
张勇%曹喜滨%吴龙%赵远
張勇%曹喜濱%吳龍%趙遠
장용%조희빈%오룡%조원
成像系统%非扫描激光雷达%增益调制%增益饱和%距离精度
成像繫統%非掃描激光雷達%增益調製%增益飽和%距離精度
성상계통%비소묘격광뢰체%증익조제%증익포화%거리정도
imaging system%scannerless lidar%gain modulation%gain saturation%ranging accuracy
增益调制非扫描激光雷达是一种新体制的激光雷达,其测距精度的研究具有重要价值。从增益调制激光雷达距离表达式出发,研究了增益调制激光雷达各系统参数对于距离精度的影响关系,综合考虑了回波强度较低时的光子噪声和距离精度较高时微通道板的增益饱和带来的影像,给出了测距精度与回波功率的关系曲线,得到了增益调制无扫描激光雷达系统存在一个回波强度区间,通过调整系统参数控制回波强度在该区间内,可以保证系统获得最高的测距精度。
增益調製非掃描激光雷達是一種新體製的激光雷達,其測距精度的研究具有重要價值。從增益調製激光雷達距離錶達式齣髮,研究瞭增益調製激光雷達各繫統參數對于距離精度的影響關繫,綜閤攷慮瞭迴波彊度較低時的光子譟聲和距離精度較高時微通道闆的增益飽和帶來的影像,給齣瞭測距精度與迴波功率的關繫麯線,得到瞭增益調製無掃描激光雷達繫統存在一箇迴波彊度區間,通過調整繫統參數控製迴波彊度在該區間內,可以保證繫統穫得最高的測距精度。
증익조제비소묘격광뢰체시일충신체제적격광뢰체,기측거정도적연구구유중요개치。종증익조제격광뢰체거리표체식출발,연구료증익조제격광뢰체각계통삼수대우거리정도적영향관계,종합고필료회파강도교저시적광자조성화거리정도교고시미통도판적증익포화대래적영상,급출료측거정도여회파공솔적관계곡선,득도료증익조제무소묘격광뢰체계통존재일개회파강도구간,통과조정계통삼수공제회파강도재해구간내,가이보증계통획득최고적측거정도。
Gain modulation scannerless lidar is a new system of lidar. It is significant to investigate the range resolution of the lidar system. Based on the gain modulation lidar distance expression, the relationship between gain modulation lidar system parameters and range accuracy is being under investigation. Both photon noise with the weak echo intensity and gain saturation of the microchannel plate with the high range accuracy were taken into account. Curve between ranging accuracy and echo power was given. Gain modulation scannerless lidar system has a interval of echo power. By adjusting parameters to manipulate echo power into this interval, the highest ranging accuracy can be obtained.