| DIFAR | Direction-Finding and Ranging | 定向与测距 |
| DIFAR | Direction Finding Acoustic Receiver | 测向声接收器 |
| DIFAR | Direction Finding & Ranging | 找到方向和范围 |
| DIFAR | DIrectional Frequency Analysis and Recording | 双向频率分析和记录 |
| DIFAR | Directional Frequency Analysis & Recording | 频率分析及记录。定向 |
| DIFAR | Directional Frequency and Ranging | 定向频率和测距 |
| DIFAR | Differential Acoustic Frequency Analysis & Reading | 声波频率分析及阅读差 |