Development of Video Transmission System for Rocket

로켓 탑재를 위한 영상 송수신장치 개발

  • Published : 2009.02.25

Abstract

A highly reliable Video Transmission System (VTS) was developed in order to obtain both video and digital data simultaneously in the real time flight test situation of a flying vehicle. The VTS integrates GPS date digital telemetry data and video signals into a compact digital data package which is compressed and processed by an MPEG-2 Encoder and a modulator respectively. The modulator is composed of a specially devised Forward Error Correction processor and base band QPSK modulator. The designed VTS was verified and proved for its required functioning and performance through separate flight tests using an airplane and Rockets.

본 논문에서는 로켓에 탑재하여 영상 자료와 비행 자료를 송수신할 수 있는 영상 송수신장치에 대하여 기술하였다. 영상 송수신장치는 GPS 위치 데이터와 원격측정 데이터를 영상 신호에 합성하여 그 영상 신호를 MPEG 방식으로 압축하고 오류 정정 코드를 추가한 후 QPSK 방식으로 변조시켜 전송한다. 영상 송신장치는 지상시험과 환경시험 전자파 간섭 시험 및 2회의 항공기 탑재 시험과 5회의 로켓 탑재 시험을 거쳐 그 성능을 입증하였다.

Keywords

References

  1. ISO 13818-1 Information Technology - Generic Coding of Moving Pictures and associated audio information : Systems
  2. ISO 13818-2 Information Technology - Generic Coding of Moving Pictures and associated audio information : Video
  3. ETSI EN 300 42 421 V1.1.2 Digital Video Broadcasting (DVB) : Framing structure, channel coding and modulation for 11/12 GHz satellite service(DVB-S), 08 1997
  4. Todd K. Moon, 'Error Correction Coding', John Wiley & Sons, 2005
  5. MIL-STD-810F, 'Environmental engineering considerations and laboratory tests'
  6. MIL-STD-461E, 'Requirements for the control of electromagnetic interference characteristics of subsystems and equipment'