合成孔径激光雷达是合成孔径技术在激光相干探测雷达领域的推广，相比传统合成孔径雷达具有更高的分辨率。由于传统线性调频模式受制于调频速率和非线性等因素，无法应用于高速运动平台。从合成孔径激光雷达原理出发，结合光通信调制手段，详细推导了强度编码合成孔径激光雷达编码压缩原理公式，并仿真验证了M序列应用于强度编码的压缩性能。通过对模糊函数推导与仿真，证明强度编码信号不存在多值性模糊和互耦合误差。搭建了基于光纤的强度编码距离向分辨率验证实验系统，选取长度1 023、码元宽度5 ns的M序列进行强度编码调制，利用2 000 m延时光纤进行了距离向验证。在考虑载波光幅值抖动的情况下，得到了0.787 5 m的距离向分辨率，精度误差5%。该文从理论与实验两方面证明强度编码合成孔径激光雷达的可行性，为工程实现提供了一定实践支撑。

Synthetic aperture ladar is a generalization of the synthetic aperture technique in the field of laser coherent detection with a higher resolution compared with the conventional synthetic aperture radar. Due to the frequency modulation rate and frequency nonlinear, the traditional frequency modulated mode can′t be applied on the high-speed platform. In this article, combined with optical communication modulation method, the functions of synthetic aperture ladar imaging based on the pseudo code intensity modulation were deduced in detail and the compression performances of M codes were simulated simultaneously. By analyzing the ambiguity function, it proves that the pseudo code intensity modulation signal is not affected by the multi value ambiguity or the intercoupling error. An experiment system of the pseudo code intensity modulation was set up by fiber of 2 000 m to test the range resolution with M codes in length of 1 023 and code width of 5 ns. Under consideration of intensity jitter of the signal carrier, a range resolution of 0.787 5 m with 5% accuracy error was obtained. Through the above analysis, it has been proved that synthetic aperture ladar based on the pseudo code intensity modulation is feasible in theory and experiments and it provides practical support for the project implementation.