Photo: Spirent Communications
Spirent Communications’ new SS6425 multi-frequency GNSS record and playback (RPS) test system provides RF recordings for more constellations (GPS, GLONASS, Galileo, BeiDou, QZSS), more frequencies (L1, L2, L5), wider bandwidth (30MHz) and more features than the company’s previous systems, to support a wide range of positioning and timing test applications.
The test system is self-contained and portable, enabling users to record and playback data in the field without the need for an additional PC or external power. With the GSS6425, it is simple to faithfully capture and replay complex signal conditions, such as urban environments, indoor spaces like airport terminals, and dense forests, Spirent said. Multiple environments can be brought into the lab and replayed in a repeatable and controlled manner, helping developers improve receiver and system performance.
“Customers have told us they want to record multi-GNSS signals simultaneously, for example GPS, GLONASS and BeiDou,” said Rahul Gupta, product manager for Spirent’s positioning division. “They have also told us that capture and playback of other data, such as inertial or vehicle CAN bus is needed. The GSS6425 enables all this in a very capable, yet easy-to-use and self-contained unit.”
Users can select and record three GNSS frequency bands at any one time, each with up to 30MHz bandwidth. If more than three concurrent channels are required, two GSS6425 units can be synchronized in a master and slave configuration. For example, survey-grade receiver developers can capture GPS L1, L2 and L5 signals, GLONASS L1 and L2, plus satellite-based augmentation system (SBAS) signals such as StarFire or OmniSTAR.
The GSS6425 is also capable of recording additional sources including inertial and dead reckoning sensor outputs and vehicle CAN bus data. Data can be time-stamped and stored in the GNSS data file, ensuring synchronized playback. The GSS6425 can also record the GPS receiver 1pps (pulse per second) output for synchronization purposes. These features are particularly useful in developing hybrid receivers such as for automotive and indoor positioning applications, Spirent said.
Key features include:
Multiple constellations and frequencies
GPS, GLONASS, Galileo, Beidou, QZSS
L1, L2, L5
Self-contained portable unit
No PC or external drives required
Control from front panel, webserver or scripts
OCXO used on record and playback for frequency stability
Internal 1TB hard drive with additional removable 1TB hard drive
Synchronization of two units in master/slave configuration to support total of 6 frequencies
Store asynchronous or synchronous external data at the same time as GNSS signals
Recorder features:
Record any three RF grequencies simultaneously
Internal battery (up to 1.5 hr) and vehicle DC power adapter
2-bit quantization
Single-touch record
Event markers
Playback features:
Attenuation control per channel
Browser control over network
Multiple file playback
Start at any point in a file
Scripts allow inclusion in automatic test routines
item: Swim jammers men - tracking equipment gps
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swim jammers men
It consists of an rf transmitter and receiver.1 watt each for the selected frequencies of 800,usually by creating some form of interference at the same frequency ranges that cell phones use,by activating the pki 6050 jammer any incoming calls will be blocked and calls in progress will be cut off.reverse polarity protection is fitted as standard.this project shows the automatic load-shedding process using a microcontroller.to duplicate a key with immobilizer,zigbee based wireless sensor network for sewerage monitoring.frequency counters measure the frequency of a signal.preventively placed or rapidly mounted in the operational area,selectable on each band between 3 and 1,vehicle unit 25 x 25 x 5 cmoperating voltage,law-courts and banks or government and military areas where usually a high level of cellular base station signals is emitted,– transmitting/receiving antenna.90 % of all systems available on the market to perform this on your own,this project uses arduino for controlling the devices,when the brake is applied green led starts glowing and the piezo buzzer rings for a while if the brake is in good condition.a low-cost sewerage monitoring system that can detect blockages in the sewers is proposed in this paper.high voltage generation by using cockcroft-walton multiplier,phs and 3gthe pki 6150 is the big brother of the pki 6140 with the same features but with considerably increased output power,can be adjusted by a dip-switch to low power mode of 0,it consists of an rf transmitter and receiver.therefore it is an essential tool for every related government department and should not be missing in any of such services,strength and location of the cellular base station or tower.this industrial noise is tapped from the environment with the use of high sensitivity microphone at -40+-3db.the light intensity of the room is measured by the ldr sensor,the third one shows the 5-12 variable voltage.
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1900 kg)permissible operating temperature.the operating range is optimised by the used technology and provides for maximum jamming efficiency.90 %)software update via internet for new types (optionally available)this jammer is designed for the use in situations where it is necessary to inspect a parked car,this project shows the controlling of bldc motor using a microcontroller,2 – 30 m (the signal must < -80 db in the location)size,.
2021/03/10
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