# Imtiaz nabi

### Global Navigation Satellite Systems

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

**Programming Languages:**

MATLAB

**Spoken Languages:**

English

**Professional Interests:**

Linear Algebra, Signal Processing

**Statistics**

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**4** Answers

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**Content Feed**

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 ...

2 months ago | 0 answers | 0

### 0

answersQuestion

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 ...

3 months ago | 0 answers | 0

### 0

answersQuestion

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...

3 months ago | 0 answers | 0

### 0

answersQuestion

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...

8 months ago | 1 answer | 0

### 1

answerQuestion

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...

9 months ago | 0 answers | 1

### 0

answersQuestion

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...

1 year ago | 1 answer | 0

### 1

answerSolved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

1 year ago

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...

1 year ago | 0 answers | 0

### 0

answersQuestion

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 ...

1 year ago | 0 answers | 0

### 0

answersQuestion

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...

1 year ago | 1 answer | 1

### 1

answerQuestion

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

answersQuestion

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

answerQuestion

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

answerBinary 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

answersQuestion

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

answerQuestion

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

answersQuestion

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

answerQuestion

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

answerQuestion

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

answerplots 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...

2 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...

2 years ago | 2 answers | 0

### 2

answersQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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 ...

2 years ago | 0 answers | 0

### 0

answersQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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...

2 years ago | 1 answer | 0

### 1

answerQuestion

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,...

2 years ago | 0 answers | 0

### 0

answersQuestion

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...

2 years ago | 0 answers | 0