FEASIBILITY STUDY OF AIRBORNE TACAN INTERROGATOR MODIFICATIONS TO REDUCE FALSE SECTOR LOCK-ON.
NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J EXPERIMENTATION DIV
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A feasibility study of airborne TACAN interrogator modifications to reduce false sector lock-ons has been conducted. Two different types of circuit modifications were investigated In one type, called Modification No. 1, the 15-cps gate-width was limited to a maximum of 10 degrees. This allowed the 15-cps error to be as much as 10 degrees without causing any error to be indicated on the Course Deviation Indicator CDI. In Modification No. 2, the 15-cps gate-width was limited to a miximum of 20 degrees. This allowed the 15-cps error to be as much as 20 degrees without causing the servo motor to go into the search condition.