论文标题
一种解决电气调制合成孔圈的非线性的解决方案
A Solution to The Non-linearity of Electro-Optic Modulation Synthetic Aperture Lidar
论文作者
论文摘要
合成孔径激光雷达具有更高的分辨率，因此需要更高的调制带宽。由于CHIRP或脉冲编码方案的数据量太大，因此给数据采集和数据处理带来了很大的压力。因此，我们可以使用DeChirp减少数据量。但是，在相位调制中存在一个严重的非线性问题，这严格禁止使用脱发。因此，为了解决上述问题，我们提出了一种基于电磁调节剂的方法，以达到大带宽呼叫信号。同时，提供一种解决严重的非线性问题的方法。首先，通过正确设置电光调节器的输入信号的幅度，确保有限级信号系数具有绝对优势。然后，可以通过通过光学滤波器过滤获得理想的CHIRP信号。最后，该方案的可行性是通过理论和实验证明的。
Synthetic aperture laser radar has higher resolution, so requires higher modulated bandwidth. Because the data volume of chirp or pulse coding schemes is too large, it brings much pressure to data acquisition and data processing. So, we can use dechirp to reduce the amount of data. However, there is a seriously non-linear problem in phase modulation, which strictly prohibited the dechirp usage. Therefore, in order to solve the above problems, we propose a method based on Electro-Optic Modulators to achieve a large-bandwidth chirp signal. Meanwhile, give a method to resolve the seriously non-linear problems. Firstly, by properly setting the amplitude of the input signal of electro-optic modulators, the finite order signal coefficients are guaranteed to have an absolute advantage. Then, an ideal chirp signal can be obtained by filtering through an optical filter. Finally, the feasibility of the scheme is proved by theory and experiments.
