單臺(tái)相機(jī)機(jī)載InSAR基線動(dòng)態(tài)測(cè)量方法研究
The Dynamic Measurement Scheme Based on Single Camera for the Airborne InSAR Baseline
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摘要: 該文提出一種對(duì)機(jī)載干涉合成孔徑雷達(dá)(InSAR)基線的動(dòng)態(tài)測(cè)量方法。通過(guò)在機(jī)載InSAR天線上布設(shè)一定數(shù)量的控制點(diǎn)，采用單臺(tái)內(nèi)方位元素精確標(biāo)定的數(shù)碼相機(jī)對(duì)天線進(jìn)行實(shí)時(shí)監(jiān)測(cè)?；趯?shí)時(shí)控制點(diǎn)圖像所建立的共線方程和后方交會(huì)算法，解算出相機(jī)測(cè)量坐標(biāo)系與控制點(diǎn)輔助坐標(biāo)系之間的轉(zhuǎn)換參數(shù)。將轉(zhuǎn)換參數(shù)代入待測(cè)點(diǎn)坐標(biāo)方程后，計(jì)算得到天線中心在測(cè)量坐標(biāo)系下的實(shí)時(shí)三維坐標(biāo)。在實(shí)驗(yàn)室進(jìn)行的靜態(tài)和動(dòng)態(tài)模擬實(shí)驗(yàn)取得較好結(jié)果，驗(yàn)證了該文提出的InSAR基線動(dòng)態(tài)測(cè)量方案的可行性。Abstract: The dynamic measurement scheme based on single camera for the airborne InSAR baseline is described in this paper. In the above measurement scheme, the calibrated camera is mainly responsible for taking pictures on the pre-designed legends on the antennas of the InSAR system at a reasonable frequency. The 3D coordinates of the antenna phase centers are calculated by the collinear equations and backward intersection algorithm. The scheme is verified feasible by the static and dynamic tests.
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