What type of GPS receiver is designed to accept both L1 and L2 frequencies?

A dual frequency receiver is specifically designed to accept both L1 and L2 frequencies from GPS satellites. The L1 frequency operates at 1575.42 MHz and is used primarily for civilian applications, while the L2 frequency operates at 1227.60 MHz and is primarily used for military purposes. By utilizing both frequencies, a dual frequency receiver can provide improved accuracy and reliability in positioning data.

This is especially important in environments with signal degradation, such as urban canyons or areas with heavy vegetation. The use of dual frequencies allows the receiver to correct for atmospheric errors, particularly ionospheric delays, which can affect the accuracy of positioning. Multi-band receivers also accept multiple frequencies but are more advanced and can include additional satellite systems. A single frequency receiver only utilizes one frequency, limiting its performance and accuracy. Combination receivers can refer to devices that integrate various functionalities, but they don’t necessarily imply the acceptance of both L1 and L2. Thus, the dual frequency receiver is the most appropriate and accurate designation for a device that handles both L1 and L2 frequencies.