GROUND RECEIVING AND PROCESSING SYSTEM FOR AVHRR AND MODIS RADIOMETERS

Abstract

In this paper, we describe the operating of our acquisition system and some applications of the received images. Level 1B image data is the result of the processing of the satellite raw data and constitutes one of the main products of the AVHRR- NOAA and MODIS system. A sample of acquired data is processed by our PCNOAA Software; the results are presented in this paper. Images were acquired daily by our receiving station. It allows for in-situ real time AVHRR data reception (APT and HRPT formats). It uses a motor-steered horn antenna with dual low noise amplifiers. The antenna itself is only 1 m long with a 0.9 m square cross-section. It is linked to a receiver operating on both AVHRR and MODIS transmission frequencies (1698 and 1707 MHz), which in turn is connected via a satellite interface card to a standard PC.