中圖分類號： TN951；TN957.51
文獻標識碼： A
DOI：10.16157/j.issn.0258-7998.222970
中文引用格式： 田凱祥，劉寧波，王中訓(xùn)，等. 岸基對海雷達STC曲線設(shè)計與性能對比[J].電子技術(shù)應(yīng)用，2022，48(8)：1-5，12.
英文引用格式： Tian Kaixiang，Liu Ningbo，Wang Zhongxun，et al. Comparison of STC curve design and performance of shore-based sea-to-sea radar[J]. Application of Electronic Technique，2022，48(8)：1-5，12.

Comparison of STC curve design and performance of shore-based sea-to-sea radar

Abstract： In the process of radar to sea detection, the near-range sea clutter echo power is high, which seriously affects the radar receiver work and subsequent signal processing. In order to balance the gain and sensitivity of radar receiver, a reasonable design of sensitivity time control (STC) curve is needed. This paper introduces four STC design curve methods using GARCH model, polynomial function, radar distance equation and exponential function, and compares and analyzes the near-range sea clutter suppression performance of the four STC curves by using the measured data under high and low sea conditions. The experimental results show that the STC curves in the form of radar distance equation have significant performance in suppressing sea clutter in both high and low sea states; the STC curves modeled by GARCH model are suitable for low sea states; the STC curves in the form of polynomial and exponential are close to each other in different sea states.

Key words : radar；sea clutter；sensitivity time control