ITU-R RS.1280 PDF

Introduction

A methodology is presented that allows an estimate to be made as to whether or not the unwanted signal received by a terrestrial radar from an active spaceborne sensor may cause difficulties if operated in common frequency bands. The calculations highlight a number of parameters of the sensor that can be chosen such that the sharing situation is improved.

The frequency bands below 10 GHz being considered by this methodology are 1 215-1 300 MHz, 3 100-3 300 MHz, 5 250-5 350 MHz, 8 550-8 650 MHz and 9 500-9 800 MHz. These are commonly called L-, S-, C-, and X-band (the latter two) by radar operators. The characteristics of these various bands are such that L- and S-bands are quite often used for search and surveillance radars, while C- and X-bands are often used for tracking radars.