GPS World, January 2014

receivers and antennas be designed to operate in the presence of these RF threats NovAtels GNSS receiver designs are built to withstand high levels of near band interference without sacrificing other receiver features such as size and power consumption ANTENNA SELECTION Choosing the correct GNSS antenna is vital to GNSS system performance A high performance GNSS antenna provides superior multipath rejection and highly stable phase center both important to precision operations Matching the signals and frequencies between your antenna and receiver is critical If your vendor has an antenna product line they can help fit the right antenna to the application With all spectrums of signals being utilized with modern GNSS intentional and unintentional interference and jamming is becoming major concern NovAtels GAJT GPS anti jam antenna uses a controlled radiation pattern antenna to eliminate in band interference mitigating the threat to military operations timing and networks infrastructures EASE OF INTEGRATION Integration factors to be considered before you buy include A receiver should have a scalable level of performance so that it can evolve as your needs change t 4DBMBCJMJUZ SFDFJWFS TIPVME IBWF B TDBMBCMF MFWFM of performance so that it can evolve as your needs change In this way by integrating one receiver a range of different applications can be satisfied with only a change of software t OUFSGBDF 1SPUPDPMT 5IF TVSWFZ JEFOUJGJFT UIF communication options available with the listed receivers It is also important to make sure the receiver you choose has the interface protocols you need for your application t PNQMFNFOUBSZ 5FDIOPMPHZ 4PNF 44 SFDFJWFST DBO be paired easily with other sensor devices to provide position and velocity solutions with higher precision and quicker update rates These sensors includes accelerometers gyroscope and odometer etc GNSS product information or integration advice can also be obtained by clicking on the Get Expert Advice button found throughout novatel com Choosing the right vendor Just as there are technical considerations for choosing the right receiver there are factors that should influence whom you choose as your GNSS partner Some questions to consider include 1 Does your vendor compete with you in your market A true OEM supplier will support you in winning market share in your market and not show up at your customer with their product 2 Does your vendor have a track record for GNSS innovation and leading edge technology 3 Integrating a receiver into your system can be a complex activity Is your vendor set up to support you with the integration effort Is the product well documented and designed for integration Does the company have a support structure of application engineers capable with assisting with integration challenges 4 Is your vendor a reliable and recognized manufacturer As receivers become more complex only proven manufacturers will succeed in offering high product quality and reliability 5 Is your vendor a cooperative part of your supply chain Your vendor should support your needs with quick lead times and flexible order fulfillment NovAtels field upgradeable products allow customers to keep their inventory costs low and offer product flexibility 6 Is your vendor financially stable The recent recession has been difficult for the GNSS industry Make sure your vendor is likely to be around to support you with your current product and to develop innovative next generation technology www gpsworld com January 2014 GPS World 3