On Finite Word Length Computing Error of Fixed-Point SAR Imaging Processing*

• DOI: 10.23919/cje.2014.10851225
• Publication Date: 2025-01-23T18:56:06Z
• Authors: Yizhuang Xie; Bocheng Zhu; Wen Yan; Weijie Zhang
• Keywords: Fixed-point arithmetic; Word length; Point target

Synthetic aperture radar (SAR) imaging system is generally realized by fixed-point with the pur- pose of reducing implementation scale and enhanc- ing real-time performance. Finite word length computing error SAR studied. The characteristic in analyzed. A finite model built, means which empirical formula system's output noise-to-signal ratio derived. Based on formula, processing presented according to different granularities. validity this pro- posed verified level sim- ulation.