I. INTRODUCTION

II. CURRENT AND FUTURE AERIAL THREATS AND THEIR CHALLENGING FEATURES

III. ELECTROMAGNETIC WAVES INTERACTION WITH THE AERIAL VEHICLES AND SURROUNDINGS

IV. RADAR TRANSMISSION AND RECEPTION

V. DETECTION AND RANGING USING RADAR SYSTEMS

VI. TRACKING AND CLASSIFICATION OF AERIAL THREATS USING RADAR SYSTEMS

VII. TYPES OF RADAR SYSTEMS

VIII. MISCELLANEOUS FACTORS AFFECTING RADAR PERFORMANCE

IX. COMMUNICATION SYSTEMS FOR THE DETECTION, TRACKING, AND CLASSIFICATION OF UAVS

X. METHODS OTHER THAN RADAR SYSTEMS

XI. CONCLUDING REMARKS