Halberd steadily decreased. The halberd all but disappeared as a rank-and-file weapon in these formations by the middle of the sixteenth century, though Hakluyt's 'Voyages' relate the death of a halberdier named Zachary Saxy (probably a German) in fighting on the coast of Ecuador during Cavendish's circumnavigation in 1587. The halberd has been used as a court bodyguard weapon for centuries, and is still the ceremonial weapon of the Swiss Guard in the Vatican and the "Alabarderos" (Halberdiers) Company of the Spanish Royal Guard. The halberd was one of the polearms sometimes carried by lower-ranking officers in European infantry units in
Radar configurations and types Radar configurations and types Radar configurations and types is an article about listing the different uses of radars. Radar come in a variety of configuration in the emitter, the receiver, the antenna, wavelength, scan strategies, etc. Search radars scan great volumes of space with pulses of short radio waves. They typically scan the volume two to four times a minute. The waves are usually less than a meter long. Ships and planes are metal, and reflect radio waves. The radar measures the distance to the reflector by measuring the time of the roundtrip from emission of a pulse to reception,