中圖分類號：TN958.93 文獻(xiàn)標(biāo)志碼：A DOI: 10.16157/j.issn.0258-7998.256758
中文引用格式： 于春輝，張士偉，劉芫嘍，等. 基于機載試驗的星載合成孔徑雷達(dá)等效分析[J]. 電子技術(shù)應(yīng)用，2026，52(1)：116-122.
英文引用格式： Yu Chunhui，Zhang Shiwei，Liu Yuanlou，et al. Equivalence analysis of spaceborne SAR based on airborne experiments[J]. Application of Electronic Technique，2026，52(1)：116-122.

Equivalence analysis of spaceborne SAR based on airborne experiments

Abstract： To address technical challenges in engineering verification of spaceborne Synthetic Aperture Radar (SAR) systems, this study designs a complete airborne experiment equivalence analysis scheme. Guided by SAR system similarity theory, the scheme establishes equivalence design principles, constructs an experimental framework covering flight platform configuration, radar parameter matching, and scenario design, and introduces an innovative multi-dimensional equivalence analysis method. By cross-validating measured data with theoretical designs, it enables effective inversion of spaceborne SAR performance indicators from airborne test results based on the Strip mode. Measured data show errors within 2% for 2D resolution, 6% for range beamwidth, and 1.06 dB for Noise Equivalent Sigma Zero (NESZ). The proposed approach provides a critical technical path for spaceborne SAR engineering verification. Airborne experiment equivalence analysis and index inversion reduce R&D risks significantly, offering practical guidance for advancing spaceborne SAR technology engineering applications.

Key words : spaceborne synthetic aperture radar；airborne test platform；equivalence analysis；engineering verification