The Design of Compass/BeiDou Navigation Satellite Terminal for Migrant Bird Research

Table 1

The measured parameters of the terminal.

Input VSWR	≦2.0
Signal sensitivity of the receiver	−127.6 dBm
Transmitted power	37 dBm
Carrier compression	≧30 dBc
Modulated phase error	≦3°
Localization and communication; (continuously for 24 hours)	Successful rate is larger than 95% and; localization accuracy is less than 100 m
Locking time	First locking time: ≤2 s; Relocking time: ≤1 s; Autolocalization time: ≤2 min