Development and Flight Testing of an Onboard Video System for the KSLV-I

• DOI: 10.2322/tastj.9.29
• Publication Date: 2011-07-05T06:21:36Z
• Authors: Sang-Rae LEE; Sung-Wan KIM; Joonyun KIM; Jae-Deuk LEE
• Keywords: 0203 mechanical engineering; 02 engineering and technology; 7. Clean energy

Korea Space Launch Vehicle-I (KSLV-I) carrying the STSAT-2A satellite, made its maiden flight on August 25, 2009. Liftoff was from Aerospace Research Institute (KARI) launch site at Naro Center in a southern coastal province of Korean peninsula. A video telemetry system provided visual monitoring critical events, as well dynamic moving images, through two cameras equipped upper stage. This paper describes development onboard consisting cameras, compression unit and an RF transmitter meeting requirements KSLV-I vehicle. During flight, ETTARS, especially reconstructed small ground station for KSLV-I, received data simultaneously measured automatic gain control (AGC) signal levels receiver. The achieved 15fps rate, flew with 2Mbps rate transmitted using NRZ-L PCM/FM S-band. Errors real channels occurred predicted by link budget equations based thermal noise multipath interference. According to error analysis, BER versus SNR performance degradation laboratory reference about 1dB, which is close expected limit.