ATRK Along-Track Error沿航线误差
ATS Air Traffic Services空中交通服务
ATSC Air Traffic Services Communication空中交通服务通信
ATT Attitude姿态
AUSSAT Australian Satellite澳大利亚卫星
AUTODIN Automated Digital Network自动化数字网络
AUTOVON Automatic Voice Network自动化话音网络
AUX Auxiliary辅助
AVOL Aerodrome Visibility Operational Level机场能见度运行等级
AVPAC Aviation VHF Packet Communications航空甚高频分组通信
AVS Aviation Standards航空标准
AWANS Aviation Weather And NOTAM System航空气象和航行通告系统
BARO Barometric气压
BAZ Back Azimuth后方位，背航道
BER Basic Encoding Rules基本编码规则
BER Bit Error Rate误码率
BIT Built-In-Test机内测试
BITE Built-In-Test Equipment机内测试设备
BOP Bit Oriented Protocol面向位的协议
BPS bits per second每秒传送位数；每秒比特数
BPSK Biphase Shift Keying两相相移键控
C/A (CA) Code Course Acquisition Code粗获码（民用的）
C/I Carrier-to-Interference Ratio信号干扰比
C/N Carrier-to-Noise Ratio信噪比
CA Conflict Alert冲突告警
CA GPS Course- Acquisition Code粗捕获码（民用码）
CA/MSAW Conflict Alert/Minimum Safe Altitude Warning冲突告警/最低安全高度警告
CAA Civil Aviation Administration, Civil Aeronautical Authority, Civil Aviation Authority民航局
CAAC General Administration of Civil Aviation of China中国民用航空总局
CAASD Center for Advanced Aviation System Development(The MITRE Corporation) (MITRE公司)高级航行系统开发中心
CAB Civil Aeronautical Bureau民航局
CARF Central Altitude Reservation Function中央飞行高度保留功能
CARs Civil Air Regulations民用航空规则
CHI Computer Human Interface机人接口
CIDIN Common ICAO Data Interchange Network国际民航组织公用数据交换网
CIS Cooperative independent surveillance合作式独立监视
CLAM Cleared Level Adherence Monitoring放行高度保持监视
CLB Climb爬升
CLK Clock时钟
CLNP Connectionless Network Protocol无连接网络规程（协议）
CLR Clear清除
CMC Central Maintenance Computer中央维护计算机
