Questions tagged [tracking]
The tracking tag has no usage guidance.
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How does gps signal acquisition and tracking work for multiple satellite signals?
I have a general idea on signal acquisition and tracking for a single carrier, but how does it work for multiple carrier?
For instance, the receiver receives a signal which contains signal from, lets ...
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Costas assisted by Frequency Locked Loop (FLL)
Carrier synchronization for M-PSK signals can be accomplished with the Costas loop. Typically, this loop consists of an error detector, a second-order loop filter and an NCO. Error detector is being ...
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Fastest way to track dominant eigenvector of recursively updated correlation matrix
Consider a real vector time series: $\mathbf{x}_k\in{\mathbb{R}}^{N \times 1}$ where $k$ is the sample index. An associated correlation matrix is updated recursively as:
$${\bf R}_k = \alpha {\bf R}_{...
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PLL Phase Error Detectors for non-bandpass-communication type signals
I'm quite familiar with PLLs for bandpass signals (e.g., GPS) which operate on IF or complex baseband signals. However, I now have a phase tracking problem where the signal is not necessarily ...
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SAR and ISAR sampling time
This is a repost of a question that I've previously asked in the EE section of SE. Unfortunately, I've not solved my problem.
I'm seeking insight into the typical values of sampling times or refresh ...
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TDOA based localization of dynamic object
Does TDOA based localization give estimated local coordinates with both positive and negative range error.
Let me explain
When i obtain localized coordinates using TDOA of moving object, sometimes the ...
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MAX2769 I & Q For Signal Acquisition & Tracking
Having pulled data from a MAX2769B in device state 2 (2-bit I only), I have found satellite signals by multiplying the I-only data by the respective PRN and taking the FFT of the data. Using this ...
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Tracking period of quasi-periodic transient type signal in strong non-stationary interference
Consider a desired (pink) signal as well as its observation in heavy, non-stationary interference (green, this is the desired signal plus interference). As seen in the plot, the interference can also ...
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What's the best way of modeling 3d target motion with only 2d angle observations?
A maneuvering target is flying in 3d cartesian space, but a sensor (passive infrared or mic array, etc.) can only observe it in polar coordinate with 2d orientations
(azimuth, elevation). For ...
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Kalman Filter Motion model with moving sensors
Suppose I have an object that I am tracking with moving sensors using a basic Kalman Filter (for example, think of a ship being tracked by satellites). In the simplest case where the sensors are ...
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State estimation in HyperSonic Missiles
I'm curious, what would be the correct approach for state estimation for hypersonic Missiles?
Would it be exclusively GPS and IMU? Historically these are what was used, but I have also seen ground ...
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Detecting & tracking an arbitrary object in a video
I have a video from a fixed (stationary) camera. Sometimes there are slight movements in the frames (e.g. tree moving a bit in the wind). Other times, some might walk into the view of the camera, a ...
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Estimate and Track the Amplitude, Frequency and Phase of a Sine Signal Using a Kalman Filter
There is sinusoidally controlled signal, which other than being noisy, can change values for amplitude, frequency, phase and offset. At every new sample a new sine is fitted for the last N samples. ...
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GPS | Retain Signal Tracking after Noise Bound
I have an IF data, 2 seconds signal sample from only one GPS satellite, I know the PRN number of the satellite.
...
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Friendly target identification in radar
How do radar systems identify friendly targets to avoid AA locks during combat scenarios?
Do friendly planes broadcast a known signal or is something else going on?
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