一种基于信号合成的无线电干涉测量方法

针对后续深空探测任务更高测量精度需求，文章提出了一种基于信号合成的无线电干涉测量方案，并对方案性能进行了理论分析；结合目前主流信号合成算法，提出了一种基于相位补偿的Sumple算法，该算法不仅合成效率高，且合成信号与参考信号具有相同的相位特性，这是天线组阵技术应用于无线电干涉测量的前提；利用相控阵天线试验数据和DOR信号仿真数据对合成方案和合成算法进行了验证，结果表明信号合成处理可以提高无线电干涉测量时延估计精度，这在深空探测任务中具有重要意义。

An interferometry method based on signal combination

Aiming at the demand of more accurate interferometry in the following deep space exploration, a novel interferometry scheme based on signal combination is proposed and analyzed. By studying the mainstream signal combination algorithms, an improved Sumple algorithm based on phase comprehension is put forward. This algorithm is more efficient than the original Sumple algorithm, and moreover its combined signal has the same phase performance as that of the reference signal, which is the premise of antenna array technique used for interferometry. Finally, tests are conducted by using phased array data and simulated DOR signal data. The processing results show that the signal combination improves the delay estimation accuracy of interferometry, and is of special meaning in deep space exploration.