系统工程理论与实践
繫統工程理論與實踐
계통공정이론여실천
Systems Engineering—Theory & Practice
2015年
2期
506~512
,共null页
李文臣 张政超 李宏 王凌艳 满莹
李文臣 張政超 李宏 王凌豔 滿瑩
리문신 장정초 리굉 왕릉염 만형
多站时差定位 试验评估 时差测量 相关法 综合时间测量误差 最小二乘参数估计
多站時差定位 試驗評估 時差測量 相關法 綜閤時間測量誤差 最小二乘參數估計
다참시차정위 시험평고 시차측량 상관법 종합시간측량오차 최소이승삼수고계
multi-station TDOA location; test and evaluation; TDOA measurements; correlation method;integrated time measure model error; least square parameter estimate
本文给出时差定位系统相关法时差测量误差模型, 并以此为基础, 建立了多站（大于3）时差定位性能试验评估方法. 首先,给出了多站时差定位误差模型. 其次,引入了信噪比对时差测量影响因素, 提出了时差定位系统的相关法综合时间测量误差参数化模型. 第三,给出了基于最小二乘法的综合时间测量误差参数估计方法, 估计出综合系统参数和时间测量误差常数项. 第四,给出了多站时差定位误差等效推算方法, 该方法能够根据单条试验航线的时差定位数据, 推算综合时间测量误差参数, 进而获取任意位置的定位误差. 最后进行了仿真验证, 表明本文提出的时差定位性能试验评估方法优于传统固定时差测量误差模型定位性能试验评估方法.
本文給齣時差定位繫統相關法時差測量誤差模型, 併以此為基礎, 建立瞭多站（大于3）時差定位性能試驗評估方法. 首先,給齣瞭多站時差定位誤差模型. 其次,引入瞭信譟比對時差測量影響因素, 提齣瞭時差定位繫統的相關法綜閤時間測量誤差參數化模型. 第三,給齣瞭基于最小二乘法的綜閤時間測量誤差參數估計方法, 估計齣綜閤繫統參數和時間測量誤差常數項. 第四,給齣瞭多站時差定位誤差等效推算方法, 該方法能夠根據單條試驗航線的時差定位數據, 推算綜閤時間測量誤差參數, 進而穫取任意位置的定位誤差. 最後進行瞭倣真驗證, 錶明本文提齣的時差定位性能試驗評估方法優于傳統固定時差測量誤差模型定位性能試驗評估方法.
본문급출시차정위계통상관법시차측량오차모형, 병이차위기출, 건립료다참（대우3）시차정위성능시험평고방법. 수선,급출료다참시차정위오차모형. 기차,인입료신조비대시차측량영향인소, 제출료시차정위계통적상관법종합시간측량오차삼수화모형. 제삼,급출료기우최소이승법적종합시간측량오차삼수고계방법, 고계출종합계통삼수화시간측량오차상수항. 제사,급출료다참시차정위오차등효추산방법, 해방법능구근거단조시험항선적시차정위수거, 추산종합시간측량오차삼수, 진이획취임의위치적정위오차. 최후진행료방진험증, 표명본문제출적시차정위성능시험평고방법우우전통고정시차측량오차모형정위성능시험평고방법.
The time difference measuring error model of time difference of arrival （TDOA） location system is given, based on which performance test and evaluation technology for multi-station TDOA （more than 3） location system is established. Firstly, multi-station location error model is offered. Secondly, the signal noise ratio （SNR） is introduced into time difference influencing factor, and the integrated time measure error parameterized model of correlation method for TDOA location system is proposed. Thirdly, the integrated time measure error parameter estimation based on least square method is introduced to get synthetic system parameter and constant term of time measure error. Fourthly, location error equivalently reckoning method for multi-station TDOA system is presented, and this method can reckon the integrated time measure error parameter based on TDOA location test data of design airline, further to reckon positioning accuracy of arbitrary base station and source position. In the end, simulation results verify this theory, and show that this method excels the test and evaluation method of traditional fixed time difference measure error model.
