CAJ | 학술논문

恒虚警（CFAR）检测是地波雷达船只目标探测的主要方法。目前基于船舶自动识别系统（AIS）信息的 CFAR 检测验证方法是一种间接验证方式，容易受地波雷达系统测向误差的影响，且不具备对错检与漏检目标的分析能力。本文提出了一种基于 AIS 信息的评价地波雷达 CFAR 检测结果的直接验证方法。该方法将有效的 AIS 信息转换到地波雷达的距离－多普勒谱中，通过在该谱中 AIS 信息与 CFAR 检测结果的关联分析，实现 CFAR 检测结果的直接评价。论文首先给出了方法的原理和处理流程，然后利用实测数据给出了该方法在 CFAR 检测结果评价中的实际应用，验证了方法有效性，而且该方法也为低可观测目标的 CFAR 检测提供了参数优化调整的依据。
항허경（CFAR）검측시지파뢰체선지목표탐측적주요방법。목전기우선박자동식별계통（AIS）신식적 CFAR 검측험증방법시일충간접험증방식，용역수지파뢰체계통측향오차적영향，차불구비대착검여루검목표적분석능력。본문제출료일충기우 AIS 신식적평개지파뢰체 CFAR 검측결과적직접험증방법。해방법장유효적 AIS 신식전환도지파뢰체적거리－다보륵보중，통과재해보중 AIS 신식여 CFAR 검측결과적관련분석，실현 CFAR 검측결과적직접평개。논문수선급출료방법적원리화처리류정，연후이용실측수거급출료해방법재 CFAR 검측결과평개중적실제응용，험증료방법유효성，이차해방법야위저가관측목표적 CFAR 검측제공료삼수우화조정적의거。
Constant False Alarm Rate (CFAR)detection is the main method used in the ship detection of High Fre-quency Surface Wave Radar (HFSWR).The present Automatic Identification System (AIS)based verification methods of CFAR results is an indirect method,which are subject to the influence of the direction estimation error and lack of the ability of analyzing the situations of false target and miss detection.In this paper,we introduced a direct method to evaluate the CFAR ship detection results of HFSWR based on range-Doppler projection of AIS data.The AIS data were converted and presented on the range-Doppler spectrum of HFSWR.These information were then associated with the CFAR results to facilitate direct evaluation.The principle and procedure of our method were introduced in detail,and the practical applications in CFAR results of field data were provided.It was demonstrated to be an effective verification method.Moreover,it could contribute to the parameter adjustment of CFAR in detection of low observable targets.