Loran-C – Definition and Pronunciation
What is Loran-C?
Loran-C is a position-fixing system, based on chains of shore-based, low-frequency radio transmissions.
Examples of Loran-C
As of October 1, 1993, the US Coast Guard (USCG) supports and operates fifteen Loran-C chains. With the introduction of the Global Positioning System (GPS) and the termination of the Department of Defense (DOD) overseas need for Loran-C, the USCG wiU cease operating the three remaining overseas chains by December 31, 1994. Following this date, the USCG Loran-C system will consist of twelve chains.
From “Loran-C Time Management”.
Loran-C is a ground-based, long-range, 100 kHz, radio-navigation system. The coverage of the Loran-C system is defined by the geographic areas within which a receiver can reliably acquire and track the Loran-C pulses from a set of transmitters that can provide adequate measurements to meet the needs of the user.
From “Understanding GIS Loran-C Coverage: Predictions, Analysis, and Case Studies”.
Although this simple calculation is nearly correct, it is not sufficiently accurate to satisfy the absolute accuracy requirements of the Loran-C system. Two additional corrections are usually applied to this simple formula for calculation of TDs.
From “Exploring Loran-C Millington’s Method”.
Pronunciation of Loran-C
