CONTENTS

Policy on Intellectual Property Right (IPR)
Annex� Typical technical and operating characteristics of spaceborne radar sounder systems using the 40-50 MHz band
�1���� Introduction
�2���� Frequency band selection rationale
������� 2.1���� Surface penetration
������� 2.2���� Length scale of observations
������� 2.3���� Region of electromagnetic scattering model
������� 2.4���� Previous work and regulatory status between 40-44 MHz band
�3���� Technical characteristics of a 40-50 MHz spaceborne sounding radar
������� 3.1���� Mission objectives
������� 3.2���� Orbital parameters
������� 3.3���� Design parameters
������� 3.4���� Antenna gain pattern
������� 3.5���� Operational limitations
�4���� pfd and spectral pfd levels at Earth�s surface
�5� ���Conclusions