Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [navigation]

22 questions
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4 answers

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 possible for this to happen?
Denis
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6
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3 answers

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 by TI , supports only passive antennas. To be…
Denis
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5
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2 answers

EAGLE: how to find where the pin is connected - navigating fairly large schematics

I have a fairly large schematic loaded in EAGLE (netlist file is ~2500 lines long) and I want to find out where exactly some pin is connected, given chip name and pin name. What I'm trying to do: I can easily locate chip in question on the zoomed…
GreyCat
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5
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2 answers

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 positioning module and a GSM module with an antenna. The…
Denis
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4
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5 answers

Primitive navigation system

In my spare time I've decided to create something on my own. I've never designed difficult things, but I'm very curious, moreover experience would never be useless ;) I decided to create a robot, but I want to do this from 0: schematic, programming…
PF4Public
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4
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2 answers

Locate a mobile phone precisely for indoors tracking

Firstly, I don't know if I'm asking this at the right place, so excuse me if it's not. Suppose i want to track a mobile phone in a local area, lets say a large hall of 200 m x 50 m, using any external beacons required but ONLY the default sensors…
viswa
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3
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6 answers

Indoor Location Positioning

We are developing a mobile application for smartphones (Iphone, Android, BlackBerry, etc) and want to allow navigation at indoors. We can buy and place indoor gps antennas but will this solve our problem and let us to navigate users? I searched a…
bahadir arslan
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2
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2 answers

How did four-course LF radio navigation ranges have their beams other than at 90° / 180° angles?

The four-course Low Frequency Radio Range system used for aircraft navigation (in the US and elsewhere) in the 1930s and 1940s used a pair of directional antenna (with figure-of-8 shaped radiation patterns) at 90 degrees to each other. One antenna…
cpcallen
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2
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1 answer

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 bits 29 and 30 of the word before and so on. Now my…
Salman Azmat
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2 answers

How do i navigate RC car with a gps module on it from point A to point B?

I want to navigate the RC car from point A to point B. The gps module is used to find the current location coordinates i.e point A. The user enters the point B coordinates based on point A. I am wondering what algorithm i should use to move the rc…
Praveen
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Converting accelerometer readings to center of IMU

I recently purchased 3 single axis accelerometers for tracking acceleration of a vehicle. I have used a box like structure to mount each accelerometer orthogonal to each other ( As much as possible) to calculate 3d space acceleration of the…
Akash Sagar
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1 answer

How to get translation and roation data using 6DOF MPU6150

I am trying to get the position data from an IMU 6 Degrees of Freedom (MPU-6150) board using an Arduino Uno. I am trying Jeff Rowberg’s example MPU6050_DMP6.ino that may be found here. This is the first time I've worked with an IMU. I have no idea…
Sanjeevi
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Reverse trilateration / multi-lateration using BLE Beacons

I'm currently working on a proof-of-concept to work out the estimated locations (longitude and latitude) of outdoor beacons with unknown locations to begin with. The solution will use a mobile receiver (phone) to pick up signals within an area…
LawrenceH
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1 answer

Is it possible to align a mems gyro to approximately true north with no external data input?

Is it possible to align a mems gyro to approximately true north with no external data input - ie nothing input by the user. I want to put a mems gyro/acc ship on a board and mount the board to a ceiling and have it recognize the approximate…
Larry_C
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Why does IMU acceleration bias increase with increase in acceleration?

I am trying to estimate the wheel speed scale factor of a vehicle. I find that whenever the vehicle accelerates rapidly,the estimated speed is lower than the true speed. In other words, I see bias in my estimation. This bias most probably comes from…
user146290
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