Improved Inertial Measurement Unit-Aided GPS Signal Differential Acquisition Utilizing Frequency Estimation and Correction

$113.00 plus tax (Refund Policy)

Buy Article:


An inertial measurement unit (IMU) aided GPS signal acquisition method utilizing frequency estimation and correction is proposed to enhance the sensitivity of baseband processing. With describing differential coherent acquisition technology, the relation between the performance of signal acquisition and frequency estimation errors is analyzed. The approximate search range of frequency space could be obtained by speed and other information in GPS receiver with IMU-assisted. To further determine the search space of frequency-domain, stochastic errors of carrier Doppler estimation caused by IMU and oscillators are corrected utilizing auto regressive moving average (ARMA) method. This accuracy Doppler information is utilized to affect the values of local code phase and local carrier generators with differential coherent acquisition. Simulation results indicate that signal to noise ratio (SNR) for improved method with IMU is 4 dB higher than non-coherent method, and 2.5 dB higher than the standard difference method, better satisfying the requirements of GPS signal acquisition in weak signal environments.


Document Type: Research Article


Publication date: October 1, 2011

More about this publication?
  • The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more