This article indicates a thus far unexplored area of applied research and development to the application and system engineers and researchers from broad engineering backgrounds. Results of a study are presented for measurement of calibrated Radar Cross Section (RCS) of a 9‐mm bullet (projectile) model by using a commercial‐of‐the‐shelf (COTS) millimeter wave Frequency Modulated Continuous Wave (FMCW) radar system operating in 77 to 81 GHz frequency range. The calibrated RCS variation against the aspect angle is measured experimentally, analyzed, and compared with the simulation results which shows fair matching between the two. The opportunities and challenges attached with the use of such COTS systems for development of Hostile Fire Indication (HFI) systems are discussed. This bullet type and this mmwave frequency has not been thus far studied and reported in literature. This may motivate interested individuals/entities to try to measure (at acceptable accuracy before anechoic chamber measurements) RCS of similar low‐size objects by using such low‐cost COTS platforms.

中文翻译：

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使用77 GHz毫米波COTS雷达系统测量9毫米子弹模型的RCS的机遇与挑战

本文为来自广泛工程背景的应用程序和系统工程师以及研究人员指出了迄今为止尚未进行的应用程序研究和开发领域。提出了一项研究结果，用于通过使用商用现货（COTS）毫米波调频连续波（FMCW）雷达系统测量9毫米子弹（弹丸）模型的校准雷达横截面（RCS）工作在77至81 GHz频率范围内。实验测量了相对于纵横角的校准后的RCS变化，并进行了分析，并与模拟结果进行了比较，结果表明两者之间存在合理的匹配。讨论了使用此类COTS系统开发敌对火情指示（HFI）系统所带来的机遇和挑战。迄今为止，这种子弹类型和毫米波频率尚未在文献中进行研究和报道。这可能会激发有兴趣的个人/实体尝试使用此类低成本COTS平台（在无声室测量之前，以可接受的精度）测量类似小尺寸物体的RCS。