scope:

Introduction

This document contains minimum operational performance standards (MOPS) for GNSS airborne active antenna equipment designed to use GNSS signals centered at L1 (1575.42 MHz) and L5 (1176.45 MHz) frequencies with a double-sided bandwidth as indicated in Table 2-1. These signals may be augmented by other systems/equipment/techniques as appropriate to meet the performance requirements for enroute, terminal, non-precision, and precision approach phases of flight and surface operations. An active antenna is one integrated with a preamplifier.

Section 1.0 of this document provides information and assumptions needed to understand the rationale for equipment characteristics and requirements stated in the remaining sections. It describes typical equipment applications and operational goals, and forms the basis for the standards stated in Sections 2.0 through 4.0.

Section 2.0 contains the minimum performance standards for the equipment. These standards define required performance under standard operating conditions and stressed physical environmental conditions. It also details the recommended bench test procedures necessary to demonstrate compliance.

Section 3.0 provides information regarding the performance required of the installed equipment.

Section 4.0 provides information on the operational performance evaluation for the GNSS Antenna

Compliance with these standards by manufacturers, installers, and users is recommended as one means of assuring that the equipment will satisfactorily perform its intended function(s) under conditions normally encountered in routine aeronautical operations. The word "equipment" as used in this document includes all components or units necessary (as determined by the equipment manufacturer or installer) for the equipment to properly perform its intended function. It is recognized that any regulatory application of these standards is the responsibility of appropriate government agencies.

As the measured values of equipment performance characteristics may be a function of the measurement method, standard test conditions and methods of test are recommended in this document.