A Study on Direction Finding Accuracy Analysis for Airborne ESM

Lee, Young-Joong; Kim, In-Seon; Park, Joo-Rae

Journal of the Korea Institute of Military Science and Technology 2008;11(6):63-73.

Young-Joong Lee, In-Seon Kim, Joo-Rae Park

항공용 전자전장비의 방향탐지 정확도 분석기법

이영중, 김인선, 박주래

국방과학연구소

Abstract

The helicopter position, heading data and the direction finding data of ESM are essentially required to compensate the parallax and analyze the direction finding accuracy of heliborne ESM in flight test phase. In the case of the long test range compared with small platform like as LYNX helicopter and Jisim Island test site, the parallax compensation for direction finding accuracy calculation and GPS position error can be neglected. In this paper, the direction finding accuracy on the basis of helicopter propeller was calculated by coordinate changing between helicopter and transmitting antenna from WGS84 coordinate to navigation coordinate using helicopter position and direction finding data.

Key Words: Airborne ESM, Heliborne ESM, Direction Finding Accuracy Analysis, WGS84 Coordinate, Navigation Coordinate, GPS, Parallax Compensation, Chi-Square Goodness-of-fit Test