stands for Global Positioning System, a satellite based navigation system

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-2
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0answers
59 views

Nano destroyed? [migrated]

Board: OE Gravitech Nano Is it possible to destroy the board if there are a voltage on a Analog pin while the board is not powered? I have a application that use a analog (speed) voltage 0-4,9 from a ...
-1
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0answers
24 views

How to send GPS data from GPS module to database server? [closed]

I have a GPS module on a development board. I want to send the GPS location of GTAP010 to a server's database. How can I do this? Do I need an embedded system? A microcontroller?
3
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3answers
328 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
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0answers
12 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
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0answers
32 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
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1answer
189 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
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0answers
45 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
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2answers
89 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 ...
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0answers
26 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
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1answer
60 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
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6answers
318 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
128 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
243 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
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0answers
73 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
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2answers
65 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
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0answers
41 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
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0answers
48 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
63 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
138 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
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0answers
61 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
63 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
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2answers
81 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
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1answer
74 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
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0answers
88 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
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2answers
77 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
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0answers
46 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
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2answers
134 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
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1answer
56 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
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2answers
145 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
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0answers
67 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 ...
0
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0answers
75 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
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2answers
305 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
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3answers
151 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
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2answers
98 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
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2answers
318 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
797 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
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2answers
124 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
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1answer
129 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
267 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
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1answer
72 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
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1answer
304 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 ...
0
votes
1answer
78 views

How do I connect GPS receiver module with USB interface?

I have a GPS module DS-330R which has 6 connections, two are not used, one is Ground, one is Vcc (3.8 to 12.0V DC) and the remaining two are Data+ and Data- for USB connection. My questions are: Can ...
0
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4answers
289 views

Voltage decreases on higher current

I have a circuit composed of Arduino Mini Pro 3.3V and GY-GPS6MV2 (GPS Ublox NEO-6M). I have tried to power it with 3 different sources: 3xAA NiMH in serie connected to RAW pin of Arduino and using ...
0
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0answers
62 views

GPS Not Working

I'm working with Venus 638 GPS and trying to get my current location. All the documents of it (datasheet, scheme, etc) can be obtained here. To deal with it, I'm using codevision avr and monitoring ...
1
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3answers
118 views

How does GPS detect coordinates?

While I understand how GPS receiver finds its distance from GPS satellites and exact position using trilateration, I still do not understand how is GPS system able to find the latitude and logitude ...
1
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2answers
245 views

GPS and Barometer assisted flight on a mountain

This question is regarding a drone and its GPS/Barometer sensor and may not fit well in this community and if that's the case, please advise if I should move it elsewhere. So. I have built a DJI F550 ...
3
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1answer
519 views

What is the purpose of a battery on a GPS receiver?

My GPS receiver has a small MS621FE battery: Any ideas what might be the purpose of a battery on a GPS receiver?
0
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2answers
445 views

SIM908 GSM and GPS modules individual power control

I've been searching around google and even in manufacturer site for this information and found nothing relevant. Is it possible to turn off GSM module and keep turned on the GPS? How can it be done? ...
2
votes
4answers
347 views

Position tracking system for frisbee

I'm trying to build a smart frisbee for use in Ultimate. I'd like to be able to track the position of the frisbee in a playing field with pretty good accuracy (within ~2ft). GPS is a possibility, but ...
1
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0answers
21 views

Error models for tracking systems

Question in short: what is a suitable model to describe, model or even generate typical errors of a 2D, 3D, 6 DoF tracking system? I am interested in measuring the influence of the quality of ...