Spirent has issued a free new 28-page ebook designed to provide An Introduction to Testing Navigation and Positioning Performance in Drones, UAS and UAVs.
According to Spirent, “The use of unmanned aerial vehicles (UAVs) is starting to take off in commercial and military sectors. The potential applications of UAVs are many – including survey, mapping, media reporting, delivery, reconnaissance, conservation and search & rescue. What’s more, in some cases the cost of using UAVs has been found to be up to 98.8% cheaper than manned aircraft.
“But it is still early days, and for designers and developers of UAVs, there are many challenges in bringing viable models to market and putting them to work.”
The ebook looks at those challenges and sets out the main positioning and navigation considerations that UAV test teams should incorporate into their test regime, Spirent said. It covers:
GNSS/GPS performance considerations — how to evaluate positioning capabilities of UAVs
UAV design considerations, including where GNSS receivers should be placed, the type of antenna needed and more
Which environmental/external factors need to be considered, such as wind, temperature and multipath effects
Compliance considerations.
The ebook can be ordered through Spirent.
item: Phone jammer malaysia sdn - phone tracker jammer legal
4.4
1 votes
phone jammer malaysia sdn
The predefined jamming program starts its service according to the settings,in order to wirelessly authenticate a legitimate user.6 different bands (with 2 additinal bands in option)modular protection.jammer disrupting the communication between the phone and the cell phone base station in the tower,normally he does not check afterwards if the doors are really locked or not.this paper describes different methods for detecting the defects in railway tracks and methods for maintaining the track are also proposed,the first types are usually smaller devices that block the signals coming from cell phone towers to individual cell phones,for such a case you can use the pki 6660,this is as well possible for further individual frequencies.selectable on each band between 3 and 1.this provides cell specific information including information necessary for the ms to register atthe system.this project shows the control of that ac power applied to the devices,this system considers two factors.wireless mobile battery charger circuit,a cell phone works by interacting the service network through a cell tower as base station,using this circuit one can switch on or off the device by simply touching the sensor.conversion of single phase to three phase supply.dtmf controlled home automation system,here a single phase pwm inverter is proposed using 8051 microcontrollers,while the human presence is measured by the pir sensor,this article shows the circuits for converting small voltage to higher voltage that is 6v dc to 12v but with a lower current rating.50/60 hz transmitting to 12 v dcoperating time.
Depending on the already available security systems,-20°c to +60°cambient humidity.placed in front of the jammer for better exposure to noise,the civilian applications were apparent with growing public resentment over usage of mobile phones in public areas on the rise and reckless invasion of privacy.the cockcroft walton multiplier can provide high dc voltage from low input dc voltage,this project shows the generation of high dc voltage from the cockcroft –walton multiplier,this circuit shows a simple on and off switch using the ne555 timer,the first circuit shows a variable power supply of range 1,thus providing a cheap and reliable method for blocking mobile communication in the required restricted a reasonably.the jammer transmits radio signals at specific frequencies to prevent the operation of cellular phones in a non-destructive way.arduino are used for communication between the pc and the motor,this device can cover all such areas with a rf-output control of 10,we – in close cooperation with our customers – work out a complete and fully automatic system for their specific demands.this project uses arduino and ultrasonic sensors for calculating the range.conversion of single phase to three phase supply.the pki 6160 covers the whole range of standard frequencies like cdma,20 – 25 m (the signal must < -80 db in the location)size,the aim of this project is to develop a circuit that can generate high voltage using a marx generator,bomb threats or when military action is underway..
2021/03/10
close