中国首个火星探测器萤火一号计划于2009年10月和俄罗斯的火卫一采样探测器一道发射升空。萤火一号将探测火星的空间环境,并验证深空导航测控与通信技术。与常规的火星探测任务不同,该探测器的轨道与位置测量主要利用天文甚长基线干涉测量技术、开环跟踪测量技术、差分单程测距测速技术、同波束干涉测量技术以及单程Doppler测速技术承担。 Firefly 1, China's first Mars rover, is scheduled to launch in October 2009 with a Phobos sampling probe from Russia. Firefly 1 will detect the space environment of Mars and verify the deep space navigation monitoring and control technology. Unlike the conventional Mars exploration mission, the orbit and position measurement of the detector mainly uses astronomical long baseline interference measurement techniques, open-loop tracking measurement techniques, differential one-range ranging velocimetry techniques, co-beam interferometry techniques, and one-way Doppler velocimetry .