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Imtiaz nabi


Global Navigation Satellite Systems

Last seen: 6 months ago |  Active since 2021

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Global Navigation Satellite System (GNSS) researcher, signals, and receiver scientist.

Programming Languages:
MATLAB
Spoken Languages:
English
Professional Interests:
Linear Algebra, Signal Processing

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Question


How to co-locate data from various profiles using MATLAB?
Hello, so I have been studying some research papers on GNSS Radio Occultation, specifically the bending angle anomaly detection ...

11 months ago | 0 answers | 0

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answers

Question


Getting incorrect plots for cosmic-2 bending profiles
Hey there, I am trying to reproduce results of a paper (see image below) (https://www.mdpi.com/2073-4433/14/1/121). I am trying ...

12 months ago | 0 answers | 0

0

answers

Question


How to Subset Data from Multiple NetCDF Files based on the desired Lat Long
Hello, I am working on the COSMIC-2 RO dataset that contains nearly 5k profiles for each day for 6 satellites. My goal is to fin...

12 months ago | 0 answers | 0

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answers

Question


Binary phase shift keying in MATLAB questions and confusion
Hi there, I have been studying GNSS signals and trying to practice it in MATLAB to understand the core concepts. GPS use BPS...

1 year ago | 1 answer | 0

1

answer

Question


How to convert a recorded signal in .bin file in int16 format to int8 without losing data?
Hello everyone, I have a recorded signal from GPS in .bin file which is stored in "int16" format. I want to convert the data i...

1 year ago | 1 answer | 1

1

answer

Question


How to apply distance formula on n-number of input data sets?
Hi there, I am trying to apply eucledian distance fromula on different data sets but I am confused about the logic. Let me t...

2 years ago | 1 answer | 0

1

answer

Question


How to Convert an "int8" baseband IQ signal into "int16" in MATLAB?
Hi there, I hope you will be doing fine. I am a GNSS researcher and a PhD candidate. I am working on GPS L1 C/A baseband signa...

2 years ago | 0 answers | 0

0

answers

Question


How to express or write short integers in MATLAB?
Hi there, I am replicating some lines of code from C language in MATLAB evironment. Although I have completed the code but I am ...

2 years ago | 1 answer | 0

1

answer

Question


Is GPS L1 baseband signal generation possible in MATLAB?
Is it possible to generate a complete GPS signal in matlab and transmit it through any SDR such as USRP or HackRF one? I have w...

2 years ago | 1 answer | 1

1

answer

Question


Is it possible to call specific C functions in matlab?
Hi there, I want to Simulate GPS signal in Matlab and have written a code which seems to be working partially. The problem is ...

2 years ago | 0 answers | 0

0

answers

Question


what are the following C datatypes Equivalents in Matlab
Hello, I wanted to understand the equavalent data types of C in matab. for example if we have a "long" in C do we need to use ...

2 years ago | 1 answer | 0

1

answer

Question


How to implement the fwrite function as in C language?
Hi there, I want to know if it is possible to implement the fwrite function same as the C language fwrite. To further explain ...

2 years ago | 1 answer | 0

1

answer

Answered
Binary file size resets to zero after every iteration
Ok thank you let me try and if it works and I don't have any question then I will accept this answer thank you for now

2 years ago | 0

Question


Binary file size resets to zero after every iteration
Hi there, I am trying to write a binary file containing Intermediate Frequency data. The code needs to run for 30 iterations a...

2 years ago | 2 answers | 0

2

answers

Question


how can we use dynamic memory allocation in matlab?
In other words what would be the closest functions to "calloc", "malloc", "free" etc in matlab?

2 years ago | 1 answer | 0

1

answer

Question


Is there any way to display a progress bar in command window while the code is running?
I have a for loop that runs 60 time and inside that there is another for loop which runs 12 times containing another nested for ...

2 years ago | 2 answers | 0

2

answers

Question


My matlab is not recognizing HEXA values
Hi I am getting an error whenever I try to use hexa values in matlab. What should I do to get rid of this issue? I am currently ...

2 years ago | 1 answer | 0

1

answer

Question


can we write hexadecimal values in matlab too?
Hi there I want to write some hexadecimal values in matlab for example // Add TOW-count message into HOW if (iwrd==1) ...

2 years ago | 1 answer | 0

1

answer

Question


can we use bitwise operators in matlab?
Hi there, I want to implement a C code in matlab in which there is a bitwise operator that is shifing bit to the right. My uesti...

2 years ago | 1 answer | 0

1

answer

Answered
plots of the following function
Hi, you can use subplot function for plotting different values in the same window another way of doing this is by using the ho...

3 years ago | 0

Question


How can we write unsigned long value in matlab?
Hi there, I am trying to implement some steps from a C code and there is this "(double)" "(unsigned long)" thing which I really...

3 years ago | 2 answers | 0

2

answers

Question


how to convert GPS week and second of the week into UTC?
Hi there, I created a function that converts the gps time to utc time however, it is calculating the values wrong can anyone ple...

3 years ago | 1 answer | 0

1

answer

Question


how do you delete a column from a structure?
Hi there I have a structure with 1x12 configuration the structure contains 12 cells and each cell contains further structures ...

3 years ago | 0 answers | 0

0

answers

Question


Can I create function that use default input unless a user gives one?
Hi I want to create function that will use current time to calculate the position of satellites. But later on I will need this f...

3 years ago | 1 answer | 0

1

answer

Question


Subtraction is not working in while loop
Hi, I have encountered a very odd and annoying issue, I am writing a code that will update the previous time of a system with th...

3 years ago | 1 answer | 0

1

answer

Question


How to Store an single row and all columns of a struct in a variable?
Hello, I have a structure which is as follow: SatGlobal.aChanData(all).PRN The above structure contains 12 satellite PRN code...

3 years ago | 1 answer | 0

1

answer

Question


what does the "-1" means in conditional statement?
Hi I am trying to understand a code which has some "if" statemets. Now normally we pass true or false to the if else statement...

3 years ago | 1 answer | 0

1

answer

Question


Need help with code conversion from C++ to Matlab
Hi, I am creating a function in matlab that will take GPS week number and second of the week as an input and return year, month,...

3 years ago | 0 answers | 0

0

answers

Question


how to extract date from a txt file while skipping other data?
Hi there, I am reading GPS/GNSS ephemeris file and have extracted the data from the .nav file but I am confused about extracting...

3 years ago | 0 answers | 0

0

answers

Question


How to apply if condition to change values inside a function
Hi, I am writing a code for finding user position from the given satellite ephemeris and pseudoranges I have calcuated satellit...

3 years ago | 0 answers | 0

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answers

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