计算机测量与控制
計算機測量與控製
계산궤측량여공제
COMPUTER MEASUREMENT & CONTROL
2010年
1期
144-145,149
,共3页
DDS模拟器%多普勒信号%数字合成技术%虚拟仪器
DDS模擬器%多普勒信號%數字閤成技術%虛擬儀器
DDS모의기%다보륵신호%수자합성기술%허의의기
DDS emulator%doppler signal%digital synthesis technology%virtual instrument
在外场试验条件下对弹丸速度进行测量,不仅测量成本高、周期长,而且在试验条件不允许的情况下,也无法完成对测试系统的验证,针对这些问题,提出了一种基于DDS技术的多普勒信号模拟器设计方案;根据其基本工作原理,硬件上进行了单片机最小系统和DDS最小系统的设计,软件上利用LabVIEW软件构建了虚拟控制平台,并详细分析了系统的控制字和控制时序;结果表明,设计的DDS多普勒信号模拟器整机结构简单,用户可操作性强,且容易升级,可广泛应用于测速雷达及其相关测试平台的检测.
在外場試驗條件下對彈汍速度進行測量,不僅測量成本高、週期長,而且在試驗條件不允許的情況下,也無法完成對測試繫統的驗證,針對這些問題,提齣瞭一種基于DDS技術的多普勒信號模擬器設計方案;根據其基本工作原理,硬件上進行瞭單片機最小繫統和DDS最小繫統的設計,軟件上利用LabVIEW軟件構建瞭虛擬控製平檯,併詳細分析瞭繫統的控製字和控製時序;結果錶明,設計的DDS多普勒信號模擬器整機結構簡單,用戶可操作性彊,且容易升級,可廣汎應用于測速雷達及其相關測試平檯的檢測.
재외장시험조건하대탄환속도진행측량,불부측량성본고、주기장,이차재시험조건불윤허적정황하,야무법완성대측시계통적험증,침대저사문제,제출료일충기우DDS기술적다보륵신호모의기설계방안;근거기기본공작원리,경건상진행료단편궤최소계통화DDS최소계통적설계,연건상이용LabVIEW연건구건료허의공제평태,병상세분석료계통적공제자화공제시서;결과표명,설계적DDS다보륵신호모의기정궤결구간단,용호가조작성강,차용역승급,가엄범응용우측속뢰체급기상관측시평태적검측.
Under the field trial condition, the traditional projectile speed test has high cost and long test cycle, at the same time, the measurement system can' t be confirmed in the situation of trial condition. A design of Doppler signal emulator based on DDS is presented in view of above problem. According to the principle of the design, the smallest single chip system and the smallest DDS system are carried on from the hardware level, and the virtual control platform is constructed by the software of LabVIEW, even more that the control word and the control succession of the system are analyzed detailed. The results indicate that, the designed Doppler signal emulator based on DDS has simple system structure, user feasibility, easy promotion, and can be widely applied to the measurement of the velocity radar and the correla-tion test platform.