stands for Global Positioning System, a satellite based navigation system

learn more… | top users | synonyms

1
vote
0answers
27 views

Getting GPS coordinates with GPRS/GSM module

I'm trying to understand if I can get GPS coordinates using only a gprs/gsm module. Probably I can do it by triangulation using BTS on the terrain and based on the RF signal but is that possible? ...
0
votes
1answer
25 views

GPS Transmitter Help

I'm starting a project in which I want to be able to attach a GPS module onto a drone in case the drone falls out of sight. I have a few questions as I'm researching parts for this. My ideal specs: ...
1
vote
1answer
31 views

Help to understand/ explore small sized 3G and GPS Antenna Design

I recently came across an exciting device called Automile, from Sweden and what caught my eye is this - I am really impressed by the packaging and overall quality of hardware integration they have ...
0
votes
0answers
24 views

GPS Module SKG13BL not working properly with Arduino Uno. How to resolve?

I am working with GPS Module SKG13BL and Arduino UNO. I have made 4 such sets. 3 of them are working fine. I am getting the latitude and the longitude correctly. The code in all of them is same with ...
0
votes
2answers
41 views

With regard to GPS signals, what is the significance of I-parts and Q-parts of Complex signal?

What is the significance of I-part & Q-part magnitudes and imbalances in the screenshot? They are listed next to the red Complex signal diagram. Imbalance of I-part: 4.7% Imbalance of Q-part: ...
0
votes
1answer
36 views

How can I objectively compare TCXO performance?

I would like to evaluate an alternate TCXO used in a GPS receiver circuit. Our current TCXO works good but I'm looking to test a lower cost alternate. The alternate part is Epson TG - 5035CJ / CG / ...
-1
votes
0answers
46 views

Gold codes and preferred sequences [closed]

I generated gold codes using two certain polynomials and was told they were the preferred pair. Why were such polynomials called preferred pairs and could someone post a link with a list of such ...
0
votes
0answers
33 views

Complex system circuit design and simulation

I'm building a solar powered GPS tracking device using an Ieik Mini Nano V3.0 Atmega328p microcontroller board (based on Arduino Nano), Adafruit Fona GSM module, Ublox NEO-6M GPS module. The GPS ...
0
votes
1answer
71 views

GPS gives weird characters when powering my ATMEGA328 on and off?

i got a problem with my GPS controlled by ATmega328, when i download the code using arduino ISP the GPS works fine and the lcd displays correct data, but when i remove the power from the atmega328 and ...
1
vote
1answer
93 views

How can I accurately estimate the power consumption of a GPS tracking device?

I'm building a solar powered GPS tracking device using an Ieik Mini Nano V3.0 Atmega328p Board (based on Arduino Nano), Adafruit Fona GSM module, Ublox GPS module. The GPS module will transmit ...
-1
votes
1answer
71 views

Parsing GPS data? [closed]

I wrote a code to simulate receiving NMEA string from my GPS, but faced a problem in parsing the latitude, longitude and date, i want to know what is the problem with the code . here is my code : ...
3
votes
3answers
342 views

What makes this active antenna “active?”

I'm using a external taoglas GPS/Glonass active antenna. It has a male SMA connector and I don't see where any voltage source hooks up to thing. So how is it active? Or does the power required for the ...
0
votes
0answers
13 views

Microwave frequency carriers and aperture error

In GPS and GNSS (global navigation satellite systems) engineering, one of the things we care very much about is the phase of the signal carrier. These are all microwave band signals. Typical sampling ...
0
votes
0answers
55 views

Crash dumping and signal not acquiring by VK16E GPS module

I am new to gps. I have bought VK16E gps module to interface it with Arduino Uno. But before that some problems occured and I am still unable to resolve them. I am using Windows 7 (64-bit) and ...
2
votes
1answer
207 views

Why does this BGA component have a keep-out layer?

I've pulled the Telit GE864-GPS (datasheet) from the Altium vault. The footprint has a keep-out layer, which prevents me from placing tracks to any pad without using vias. As the pitch is 2.5mm the ...
0
votes
0answers
54 views

How to power an IoT (w/gps module) bracelet?

I'm trying to build a bracelet that has IoT (internet of things capabilities). I am currently prototyping with a spark core and using its wifi module to hit a server. While this works great with a USB ...
1
vote
2answers
117 views

GPS in combination with servo on Arduino

Me and my friends are building a boat which needs to steer towards certain coordinates. We have a GPS and a compass on board. We have written code which calculates the direction that the boat has to ...
0
votes
0answers
34 views

Sim908: altitude, strange value

sending the command for receive the GPS information AT+CGPSINF=0 the SIM908 return this format: AT+CGPSINF=0 ...
1
vote
1answer
73 views

Duplicate RX in uart (two devices listening one of which is data-logging)

I am not too familial with UART yet, and was wondering if I could some how duplicate the stream of information going to a microcontroller from a GPS. My application will be using a msp430g2553 ...
4
votes
6answers
338 views

Reradiating antena for GPS

I need to test and maintain a batch of devices which contain GPS modules. I can work on the rest of the device, but when it comes to test the GPS part I have no signal on my desk, no matter how near I ...
2
votes
4answers
142 views

In a gps receiver, how is the delay of the signal in the antenna lead allowed for?

In a gps receiver there is an inevitable time delay in the signal travelling in the antenna lead to the circuitry of the receiver. In a typical 5 metre lead the delay is about 15 nanoseconds, which, ...
1
vote
1answer
334 views

How big a ground plane does a gps antenna need?

How big a ground plane does a gps antenna need? I am using a GPS puck antenna that has a magnetic base to hold it on to, typically, the roof of a car. I would like to use it from my room at home, on ...
0
votes
0answers
83 views

Where I can get NMEA data dump of GLONASS or GPS simulator?

For my graduation work and my open source project about detection of «spoofing» GPS and GLONASS signal I need NMEA data dump of GPS/GLONASS receiver which receive signals from GLONASS or GPS ...
0
votes
2answers
71 views

Building a vehicle tracking device

I need to build 100 coach tracking devices. I am a web/mobile programmer, not an engineer, so I'm going to be looking at outsourcing for this. To outsource this work however I should know the ...
0
votes
0answers
51 views

Disc golf disc tracker gps [duplicate]

I've done a bunch of searching and can't find any info! I want to put a small tracking device on the bottom/center of a disc for disc golf. It needs to be light in wieght so that it will not mess up ...
0
votes
0answers
49 views

Voltage Across Patch Antenna and Power Output

I'm modeling a patch antenna using two copper plates (ground plane and patch), ceramic in between the copper plates, and a lead connecting the patch and ground plane that runs through the ceramic in ...
1
vote
1answer
68 views

U-blox 6 GPS module why does it still display points every second when set to 5 minutes?

I'm trying to set up a U-blox 6 GPS module with an Arduino. In order to save power I have tried to reconfigure it using the U center to search for a fix only once every 5 minutes. I have read the ...
-4
votes
1answer
141 views

Can RFID technologies replace GPS for location/positioning applications? [closed]

I'm looking into a hobby project that would require a central interrogation device querying other devices for their location, as well as other metrics. This central device needs to know exactly where ...
1
vote
0answers
68 views

Shared feed/GND pad on Pulse W3011 antenna

This is my first post; sorry if I've unwittingly broken any rules or accepted conventions around here... I'm using a Pulse Engineering W3011 ceramic GPS antenna. As is common with these small ceramic ...
1
vote
1answer
68 views

A-GPS, cell tower, and provider service

I am not sure if I used the right forum to ask this question. If it is wrong, please point me the right one. I understand in general how A-GPS works with cell towers, and how it depends on the data ...
0
votes
2answers
86 views

Antenna phase shift

My question is regarding RF measurement systems which use antennas signal arrival time as principle of operation e.g. GPS. It is known that impedance of well-matched antenna immersed in lossy ...
1
vote
1answer
82 views

Dual GPS Antenna Connection to Possitioning Module

I am using a Positioning module that has a SMA port to hot plug an SMA antenna. It also has pins available through its foot print to connect a GPS Antenna. The module name is SIM908. I was not able ...
0
votes
0answers
100 views

Isolation between GSM and GPS antenna

We are doing a prototype for a gps based tracker. We got a problem in placing the GSM and GPS antenna. Both the GSM and GPS antenna are omni-directional antennas. In forums and application notes, the ...
-4
votes
2answers
79 views

GPS data meaning

I got this data from GPS module. $GPRMC,235316.000,A,4003.9040,N,10512.5792,W,0.09,144.75,141112,,*19 $GPGGA,235317.000,4003.9039,N,10512.5793,W,1,08,1.6,1577.9,M,-20.7,M,,0000*5F What is the ...
0
votes
0answers
47 views

Low Accuracy GPS/Low Detection (e.g. detect country or state)

I'm making something to go with an electronic compass so I can always point to a certain (non-true north) location. To do this, I want to detect what state the user is in, and look up an approximate ...
2
votes
2answers
151 views

Inductor burning out in a GPS bias tee circuit

I've got a tracking device that uses a Telit GE864-GPS combined GSM/GPS module. The GPS antenna is connected to the Telit module via a bias tee circuit, as shown below: ...
0
votes
1answer
57 views

10 MHz frequency standard input

Many sampled data systems accept a 10 MHz frequency standard. I'm designing a sampled data system, and would like to include the ability to lock to an external clock reference. I've seen many ...
1
vote
2answers
169 views

Does an antenna work inside a plastic box

I need to put two antennas for GSM and GPS communication on my PCB. My final product will be embedded in a user-friendly plastic box with buttons, leds and switches. I have not choosed yet which type ...
0
votes
0answers
68 views

Easy-to-use Antennas for beginners

I am designing an embedded system with a GPS and a GSM modules both from the u-blox company. I need external antennas for my GSM and GPS modules. From what I see when I looked for antenna integration ...
1
vote
2answers
104 views

Material that Degrade GPS Signal Reception

Between clear tempered glass (see through,thick & very strong) Vs. coloured plastic material, which would result in more degradation of GPS signals if used to make a box? The box contains a ...
1
vote
2answers
389 views

Use of the GPS 1PPS feature in a system

I'd like to know how synchronization between the GPS unit and any other sensors is done in a typical system. I understand that the 1PPS signal plays an important role. Could anyone give me a very ...
1
vote
3answers
209 views

GPS Antenna | When is an Active Antenna really Necessary?

Many vendors provide positioning modules that support active antennas as well as ones that don't. I am using 4 positioning modules out of which 3 of them support active antennas and the other , CC4000 ...
0
votes
2answers
109 views

GPS & GLONASS systems Antenna Selection

It is known that GPS satellites transmit information in the frequency 1575.42MHz MHz while GLONASS satellites transmit information at the some other 1602.0 MHz. How come most GNSS module makers say ...
1
vote
2answers
366 views

SGEE vs CGEE vs A-GPS

I refer to the explanation I picked up from a pdf below. Please note a person who already has knowledge on A-GPS and CGEE and SGEE does not have to read the explanation provided for those below. I ...
4
votes
3answers
807 views

GLONASS and GPS satellite usage simultaneously by Positioning Modules

Can a GPS module use 2 GPS satellites and 2 GLONASS satellites to obtain a fix without using all satellites of the same kind? I know that we cannot force this to happen but is it theoretically ...
0
votes
2answers
137 views

GPS modules with Active Antenna and without Active Antenna

After so much research, I've found out that GPS modules have so many factors that depend their performance on. But I was initially under the impression that GPS devices with active antennas are ...
0
votes
1answer
145 views

Correctly receiving the nmea characters from A2200-A GPS

I have been working on this project for a little while, trying to receive the characters from my GPS and then display these characters on a 16x2 LCD. I am using an interrupt on my UART RX pin which ...
1
vote
1answer
304 views

GPS signal strength issue - route layout problem?

In my design I use GPS module u-blox MAX-7, LNA MAX2659 and chip GPS antenna. First prototype design shows good signal strength, in 2 minutes from a cold start I have a fix. Here is the picture of PCB ...
1
vote
1answer
78 views

GPS parity decoding, how to get D29 and D30 of previous bits?

According to ICD GPS 200C, to decode the bits of a word you need to have the bits 29 and 30 of the previous word, this means that to get the bits 29 and 30 of the previous word you should know the ...
0
votes
1answer
342 views

How to install an embedded GPS patch antenna

How should I install an embedded GPS antenna? Here is the antenna in question: http://www.robotshop.com/ca/en/seeedstudio-embedded-gps-antenna-for-gps-bee.html It has a 9 cm cable. My project ...