ANALISIS EFEK DOPLER TERHADAP INTEGRASI SIGNAL CONDITIONER S-BAND SISTEM ANTENA AXYOM = DOPLER EFFECT ANALYSIS ON S-BAND SIGNAL CONDITIONER INTEGRATION OF AXYOM ANTENNA SYSTEM

Abstract

Abstrak Sistem antena stasiun bumi Rumpin dilengkapi dengan signal conditioner. Integrasi signal conditioner pada sistem antena Rumpin dapat berfungsi sebagai filter sinyal (band pass filter) yang akan masuk ke ACU (antenna control unit) juga berfungsi untuk menguatkan sinyal output dari ACU yang akan diteruskan ke receiver. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh efek Doppler terhadap integrasi signal conditioner dan mengetahui penguatan sinyal input receiver pada sistem antena Rumpin. Langkah langkah penelitian adalah sebagai berikut : pertama dengan melakukan pengukuran band frekuensi 2220 MHz sebelum integrasi signal conditioner, kemudian melakukan pengukuran setelah integrasi signal conditioner. Selanjutnya menganalisis efek Doppler terhadap band frekuensi yang dipakai dan menganalisis penguatan signal pada input receiver. Hasil Pengukuran dan perhitungan Doppler menunjukkan bahwa Doppler maksimum terjadi pada elevasi minimum sebesar 50,2 kHz dan Doppler terendah terjadi pada elevasi maksimum. Doppler maksimum masih dapat diproses dan pada receiver dan instalasi signal conditioner tidak mengakibatkan terganggunya penerimaan data satelit. Abstract Antenna system of Rumpin ground station is equipped with signal conditioner. Integration of signal conditioner in Rumpin antenna system serves as a filter signal (band pass filter) that will enter ACU (antenna control Unit) also function to strengthen output signal from ACU which will be forwarded to receiver. This study aims to find out how the Doppler effect on integration of signal conditioner and know the amplitude of input signal receiver in Rumpin antenna system. The research steps are as follows: firstly by measuring 2220 MHz frequency band before integration of signal conditioner, than taking measurements after signal signal integration. Analyze the Doppler effect on the frequency band used and analyze signal strengthening on the receiver input. The Doppler Measurement and Calculation results show that the maximum Doppler occurs at minimum elevation of 50.2 kHz and the lowest Doppler occurs at the maximum elevation. The maximum Doppler can still be processed on the receiver and signal conditioner installation does not effect to receiving satellite data.Hlm. 42-147:Il. ;29,7 Cm