国外星载成像高度计系统发展研究

摘要

调研了国际上现有的星载成像高度计系统发展计划和研究现状, 对比分析了各星载成像高度计系统配置和参数.同时, 与传统高度计相比, 阐述了星载成像高度计在观测中尺度、亚中尺度涡上所具备的优势, 并从时空分辨率、成像幅宽、轨道选择、测高精度、工作频率和辅助载荷选择等方面系统地分析了国外的技术发展趋势.在借鉴国外星载成像高度计发展经验的基础上, 针对海面高度 (SSH) 测量误差分配、指标体系建立等问题对我国星载成像高度计系统设计给出了建议.%The current development plans and research of the space-based imaging altimeter on the mesoscale compared with the traditional altimeter are analyzed.The spatial-temporal resolution, observing width, orbit selection, frequency selection, auxiliary load design and measurement accuracy are systematically analyzed.Based on the experiences of the early space-based imaging altimeter systems the suggestions about the error budget which effects on the SSH accuracy, establishment of system parameter are proposed for the future satellite systems of imaging altimeter design.