- cosecant pattern
- 1) Техника: косекансная диаграмма направленности2) Электроника: косекансная диаграмма направленности антенны
Универсальный англо-русский словарь. Академик.ру. 2011.
Универсальный англо-русский словарь. Академик.ру. 2011.
JY-9 Radar — Infobox Radar name = JY 9 caption = JY 9 country = People s Republic of China introdate = unknown number = unknown type = Fire Control frequency = S band PRF = 790 Hz Pulsewidth = 20 μs RPM = 6, 12 rpm range = 150 km (Pd=80%; Swerling I; 2 m²)… … Wikipedia
trigonometry — trigonometric /trig euh neuh me trik/, trigonometrical, adj. trigonometrically, adv. /trig euh nom i tree/, n. the branch of mathematics that deals with the relations between the sides and angles of plane or spherical triangles, and the… … Universalium
List of trigonometric identities — Cosines and sines around the unit circle … Wikipedia
3D radar — provides for radar coverage on three dimensions unlike the more common 2D radar. While the normal 2D radar provides range and azimuth, the 3D radar provides elevation information with range and azimuth. Applications include weather forecasting,… … Wikipedia
Distant Early Warning Line — DEW redirects here. For energy emitting weapons, see Directed Energy Weapons. USAF Distant Early Warning Line and Distant Early Warning System Office Emblem … Wikipedia
Fractional Fourier transform — In mathematics, in the area of harmonic analysis, the fractional Fourier transform (FRFT) is a linear transformation generalizing the Fourier transform. It can be thought of as the Fourier transform to the n th power where n need not be an… … Wikipedia
JY-8 Radar — Infobox Radar name = JY 8 caption = JY 8 country = People s Republic of China introdate = unknown number = unknown type = unknown frequency = C band PRF = 36,500 Hz pulsewidth= 3 3.3 μs RPM = 3/6 rpm range = 350 km (max) altitude = 25 km diameter … Wikipedia