Overview of Modern Radar Electronic Protection Class Notes Fall 2012 Dave Adamy Adamy Engineering 1420 Norfolk Ave, Atwater, CA 95301 Tel(209)357-4433 Fax(209)357-4434 www.lynxpub.com Scope of Course • Radio Propagation • Radar Jamming • Electronic Protection Handout Material • Course Syllabus – All visual aids + exercise work-sheets • EW Pocket Guide • Antenna & Propagation Slide Rule • Scientific Calculator EWPG page number To Really Understand Electronic Warfare You need to have a real feel for Radio Propagation Antenna & Propagation Calculator 1 m = 3.3 ft 1ft = .3m Antenna Calculations 1 Free Space Attenuation Ant. Gain reduction vs surface 2 Ray Attenuation 2 Fresnel Zone Calculate dB Antenna Amplitude Pattern Antenna & Propagation Calculator 1 m = 3.3 ft 1ft = .3m Antenna Calculations Free Space Attenuation Ant. Gain reduction vs surface 2 Ray Attenuation Fresnel Zone Calculate dB Antenna Scales Antenna Scales Antenna Gain & Beamwidth Set Antenna Diameter (in ft) at Frequency (in GHz) Antenna Gain & Beamwidth (cont) Read Boresight Gain at Efficiency Note 55% efficiency for Narrow Bandwidth antennas