A pulse compression system is attractive because it can achieve the severest mission requirement proposed by NASA on the number of independent samples for the Tropical Rainfall Measuring Mission (TRMM) rain radar under the constraint on allowable power consumption. Its applicability to the TRMM rain radar largely depends on the technological feasibility of reducing the range sidelobe levels of the strong surface echo at least down to -60 dB. This is required to avoid the interference from the surface clutter to the rain echo. A combined use of the time domain and the frequency domain weighting is shown to achieve a low range sidelobe purely on a theoretical basis. Range sidelobe level to be realized in a reasonable development time frame for the TRMM rain radar is somewhere between -50 dB and -55 dB at best. The power consumption of radar impacts on the TRMM satellite bus design. Efforts to save power consumption are indispensable. The concept of adaptive scanning is introduced, and its power saving efficiency is numerically evaluated for four kinds of rain searching schemes.
A feasibility study of rain radar for the Tropical Rainfall Measuring Mission. A discussion of pulse compression and adaptive scanning
Eine Durchfuehrbarkeitsuntersuchung ueber das Regenradar fuer die Tropical Rainfall Measuring Mission. Eine Diskussion ueber Impulskompression und adaptive Abtastung
Journal of the Communications Research Laboratory ; 35 , 145 ; 149-161
1988
13 Seiten, 7 Quellen
Article (Journal)
English
TELEMETRIE , SATELLIT , DATENREDUKTION , METEOROLOGIE , REGEN , PULSKOMPRESSION , RADARSYSTEM , ENERGIEVERBRAUCH , NEBENZIPFELDAEMPFUNG , FERNERKUNDUNG , MESSVERFAHREN , ABTASTUNG , SYSTEMENTWURF , NASA (NATIONAL AERONAUTICS AND SPACE ADMINISTRATION) , RADARANWENDUNG , SATELLITENUEBERTRAGUNG , LEISTUNGSVERBRAUCH , FEASIBILITY STUDY , ATMOSPHAERISCHE TECHNIK