产品展示 > 英国PEAK公司 > Beacon Receivers & Pilot Generators(PTR50)L波段信标跟踪接收器
Beacon Receivers & Pilot Generators(PTR50)L波段信标跟踪接收器
北京安迪诺数字系统技术有限公司 2020-10-22 00:13:33
型号：PTR50
The PTR50 is a next generation beacon tracking receiver, designed specifically to track and measure CW beacons from commercial satellites. Primarily an L-Band input receiver, the unit can be provided with a range of optional SHF input modules. The PTR50 is designed to be used for telemetry and control, typically in earth stations using large antennae. For satellites without beacon signals (or beacon signals that are modulated), Peak can provide a CW pilot generator option which is applied to the uplink signal (after UPC compensation) and subsequently received on the downlink instead of the normal satellite beacon signal. The receiver is designed as a versatile and easy-to-use unit utilising a graphic display module that can display a digital representation of the received beacon spectrum. This feature provides a convenient visual display of the received signal which can be used for system fault location, routine maintenance and can be an effective alternative to a fully functional spectrum analyser, which may not be necessary for these tasks. The tracking band center frequency can be set accurately using the 1kHz step size synthesiser system. The unit uses a 300Hz /2kHz phase locked loop (PLL) system to perform signal acquisition and level measurement through coherent detection. The search facility sweeps the frequency to locate a signal in the acquisition band and if a signal is detected the frequency is locked immediately to this beacon. A secondary search is then initiated to look for a more intense signal within the search band. If one is detected then the locked tracking frequency is modified. The process repeats until the largest signal is found in the search band and the anti-sideband device is then disabled. A log amplifier is used to provide an output voltage representing the input power in logarithmic scale, in effect making the input power to output voltage log-conformal. The sensitivity of the logarithmic output is user selectable from the front keypad menu. The PTR50 unit achieves lock acquisition times of typically 6s, for combinations of lower search ranges (search bandwidths) and higher sweep rate settings. It is also offered with a fast signal acquisition option achieving lock times of typically 1s, for combinations of lower search ranges (search bandwidths) and higher sweep rate settings. For redundancy the PTR series units are fully compatible with the Peak B1000L (1+1) system.
