兵工自动化
兵工自動化
병공자동화
ORDNANCE INDUSTRY AUTOMATION
2014年
3期
1-4,11
,共5页
范秀英%赵曼%郭霏%王杰
範秀英%趙曼%郭霏%王傑
범수영%조만%곽비%왕걸
航空相机%速高比%照相间隔%像移%误差分析
航空相機%速高比%照相間隔%像移%誤差分析
항공상궤%속고비%조상간격%상이%오차분석
aerial camera%velocity to height ratio%time span of photographing%image displacement%error analysis
为满足航空相机成像时影像重叠率和动态分辨率的需要,运用公式推导法分析了速高比对照相间隔和影像位移的影响。从垂直成像和倾斜成像方式的照相间隔、影像位移与速高比的定量计算公式入手,推导出了直接和间接获取速高比比值的绝对误差和相对误差的传递公式。结果表明:根据获取原理分析速高比(速度、高度)误差,运用误差传递公式计算,就可以判定速高比对照相间隔和影像位移的影响是否满足航空相机的使用要求。
為滿足航空相機成像時影像重疊率和動態分辨率的需要,運用公式推導法分析瞭速高比對照相間隔和影像位移的影響。從垂直成像和傾斜成像方式的照相間隔、影像位移與速高比的定量計算公式入手,推導齣瞭直接和間接穫取速高比比值的絕對誤差和相對誤差的傳遞公式。結果錶明:根據穫取原理分析速高比(速度、高度)誤差,運用誤差傳遞公式計算,就可以判定速高比對照相間隔和影像位移的影響是否滿足航空相機的使用要求。
위만족항공상궤성상시영상중첩솔화동태분변솔적수요,운용공식추도법분석료속고비대조상간격화영상위이적영향。종수직성상화경사성상방식적조상간격、영상위이여속고비적정량계산공식입수,추도출료직접화간접획취속고비비치적절대오차화상대오차적전체공식。결과표명:근거획취원리분석속고비(속도、고도)오차,운용오차전체공식계산,취가이판정속고비대조상간격화영상위이적영향시부만족항공상궤적사용요구。
For the requirement of velocity to height ratio(W/H) influence on image overlap rate and dynamic resolution of aviation camera imaging, the influence of velocity to height ratio on time span of photographing and image displacement were analyzed by the formula derivation. Starting from the vertical and oblique imaging quantitative imaging camera interval, image displacement and speed altitude ratio formula, derivate transfer formula of absolute error and relative error of velocity to height ratio by direct and indirect access. The results show that the error analysis of W/H (velocity, height) according to the principle of access and calculation with the error transfer formula can determine whether W/H influence on the time span of photographing and image displacement meet the demand of use of the aerial camera.