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The target range is determined by measuring elapsed time while the pulse travels to and returns from the target. Because two-way travel is involved, a total time of 12.35 microseconds per nautical mile will elapse between the start of the pulse from the antenna and its return to the antenna from a target in a range of 1 nautical mile.
It is a relocatable, solid-state, all-weather radar with dual-channel, frequency diversity, remote operator controls, and a dual beam tower mounted antenna. The radar provides controllers with range azimuth of aircraft within a 60 nautical mile radius. ASR 8 used a klystron as transmitters power amplifier stage with a load of 79 kV and 40A.
A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute ( 1 / 60 of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).
The WSP sweep images are updated every 4.8 seconds, with a range of fifteen nautical miles where the processors operate the wind shear algorithms. Launching the upgrade program for the ASR-9's radar processor will ultimately enhance the amount of weather data the computer can process, leading to an even greater weather surveillance range of up ...
Online version of Chart No.1 with "Symbols, Abbreviations and Terms" used in nautical charts Portolan Chart of Gabriel de Vallseca, 1439 The short film "Reading Charts (April 6, 1999)" is available for free viewing and download at the Internet Archive .
The main airspace is a zone 5 nautical miles in radius from the surface to 3,000 feet above aerodrome level (aal). One or two stubs may project from the main airspace above, aligned with the selected runway. The stubs' dimensions are 5 nautical miles long, 4 nautical miles wide, 1000 feet to 3000 feet aal.
They are at a scale of 1:1,000,000 (about 1 inch = 13.7 nautical miles or 16 statute miles). WACs were discontinued by the Federal Aviation Administration (FAA) in 2015. Description
In radar-related subjects and in JTIDS, a data mile is a unit of distance equal to 6,000 feet (1,829 metres; 0.9875 nautical miles; 1.136 miles). An international mile is 0.88 data mile. The speed of light is 299,792,458 metres per second (983,571,056 ft/s), or about one foot per nanosecond .