NASA's Deep Space Network (DSN) uses high-power transmitters on its large antennas to communicate with spacecraft of NASA and its partner agencies. The prime reflectors of the DSN antennas are parabolic, at 34m and 70m in diameter. The DSN transmitters radiate Continuous Wave (CW) signals at 20 kW - 500 kW at X-band and S-band frequencies. The combination of antenna reflector size and high frequency results in a very narrow beam with extensive oscillating near-field pattern. Another unique feature of the DSN antennas is that they (and the radiated beam) move mostly at very slow sidereal rate, essentially identical in magnitude and at the opposite direction of Earth rotation.The DSN is in the process of revamping its documentation to provide analysis of the High Intensity Radiation Fields (HIRF) environment resulting from radio frequency radiation from DSN antennas for comparison to FAA regulations regarding certification of HIRF protection as outlined in the FAA regulations on HIRF protection for aircraft electrical and electronic systems (Title 14, Code of Federal Regulations (14 CFR) §§ 23.1308, 25.1317, 27.1317, and 29.1317).This paper presents work done at JPL, in consultation with the FAA. The work includes analysis of the radiated field structure created by the unique DSN emitters (combination of transmitters and antennas) and comparing it to the fields defined in the environments in the FAA regulations. The paper identifies areas that required special attention, including the implications of the very narrow beam of the DSN emitters and the sidereal rate motion. The paper derives the maximum emitter power allowed without mitigation and the mitigation zones, where required.Finally, the paper presents summary of the results of the analyses of the DSN emitters and the resulting DSN process documentation.
Compliance with High-Intensity Radiated Fields Regulations - Emitter's Perspective
Sae Int. J. Aerosp
SAE 2012 Aerospace Electronics and Avionics Systems Conference ; 2012
Sae International Journal of Aerospace ; 5 , 2 ; 311-317
2012-10-22
7 pages
Aufsatz (Konferenz)
Englisch
Compliance with High-Intensity Radiated Fields Regulations - Emitter's Perspective
British Library Conference Proceedings | 2012
|Understanding HIRF : high intensity radiated fields
TIBKAT | 1995
|The NASA High Intensity Radiated Fields Laboratory
British Library Conference Proceedings | 1997
|High Intensity Radiated Fields (HIRF) Project Plan
NTIS | 1991
|S-76 High Intensity Radiated Fields. Volume 3
NTIS | 1993
|