The FFT algorithm in this paper is based on the relationship between FFT and signal convolution. The specific acquisition process is as follows: 1) The baseband complex signal is obtained by mult
Home > News > Other information > truck tracking webfleet solutions > GPS FFT algorithm
source:truck tracking webfleet solutions release time:2022-11-10 Hits: Popular:realtime gps tracker online
The FFT algorithm in this paper is based on the relationship between FFT and signal convolution. The specific acquisition process is as follows:
1) The baseband complex signal is obtained by multiplying the acquired IF signal data with the co directional and orthogonal signals of the locally generated carrier wave, and then through a low-pass filter;
2) FFT complex signal;
3) FFT the output pseudo code signal of the local pseudo code generator and conjugate it;
4) Multiply the results of steps 2) and 3) by complex numbers and perform IFFT (Inverse Fast Fourier Transform);
5) Compare the modulus of the result in step 4) with the threshold and determine the capture result. If it is greater than the threshold, the capture is considered successful.
By continuously adjusting the local carrier frequency and pseudo code phase until the carrier frequency difference and pseudo code phase difference are zero, the ideal state is achieved. In fact, as long as the difference is greater than the set threshold, the strong autocorrelation peak will be achieved when the signal exists and the strength is sufficient to complete the signal acquisition.
Read recommendations:
GF70L-Solar Magnetic Asset GPS Tracker
Vehicle GPS positioner startup status classification description.gps tracker für auto webfleet solut
Last article：Hardware Design of GPS System
Next article：GPS FPGA Program Design
Related Information
mini gps tracker sales
2023-04-11gps vehicle tracker Manufacturing
2023-04-23Cantrack Login
2023-04-23Secumore
2023-03-164G GPS Tracker equipment
2023-04-23Pet GPS Tracker wholesaler
2023-03-16GPS Tracking Factory
2023-04-11real-time gps tracking supplier
2023-04-23Magnetic gps tracker wholesaler
2023-03-16fleet gps trackers custom
2023-04-23GF70L-Solar Magnetic Asset GPS Tracker
2026-04-293000mAh Magnet Asset GPS Tracker
2026-04-294G OBD2 GPS Tracker
2026-04-0410000mAh Magnetic Asset GPS Tracker
2026-04-29G900LM J16-4G Car GPS Tracker
2026-04-29Vehicle Management System Based on Differential GPS Technology
2022-12-20The GPS navigation function is diverse. Let's take a closer look at the GPS navigation voice prompt
2023-04-14Analysis and Design of Vehicle GPS System
2022-09-01GPS FPGA Program Design
2022-11-10The GPS system consists of three parts
2022-12-06GPS positioning function
2022-12-10What to do if the car GPS locator shows that it is not online.Magnetic gps tracker company after ins
2023-09-16GPS evaluation standard
2022-10-22GPS military application introduction.realtime gps tracker online supplier
2023-05-06Fleet management.Technical requirements for GPS positioning management service provider terminals
2023-11-07gps vehicle tracker.GPS accuracy
2023-11-14GPS pseudo -distance measurement introduction.gps tracker for trailer distributors
2023-04-20GPS system GPS BLOKC III prototype starts testing
2023-02-03Does the GPS positioner consume a lot of power?gps tracker no monthly fee wholesaler
2023-04-07Auto GPS information and mobile phone interconnection.gps tracker no monthly fee Factory
2023-05-18Related Articles
A suitable global GPS tracker manufacturer should provide multi-band 4G LTE Cat 1 devices, confirm network compatibility for the destination market, and support GPS tracking platforms, APIs, OEM/O...
A reliable GPS tracker manufacturer should provide stable 4G real-time tracking, accurate multi-mode positioning, a wide range of device types, fleet and asset management functions, OEM/ODM customizat...
Firstly, let's take a look at why GPS locators are inaccurate and have large errors. GPS positioning accuracy, generally within 10 meters if obtaining Beidou or GPS signals; If it is a signal...
GPS differential positioning technology is an important method to improve the positioning accuracy of the Global Positioning System (GPS). In traditional GPS positioning, satellite signals are af...
Vehicle GPS Navigation System Vehicle mounted GPS navigation system is an indispensable and important device in modern automobiles, providing drivers with convenient and accurate navigation service...
Handheld GPS positioning device is a portable and practical positioning tool widely used in outdoor exploration, geological exploration, forestry investigation and other fields. Handheld GPS posi...
alger.qin@6gpstracker.com
Phone: +86 198 7412 0903
Tel: +86 755 2370 2092
WhatsApp: +86 198 7412 0903
Add: FL5, BLDG B, Lianxing Industrial Park, JiangJun Rd, Qiuchang, HuiYang District, Huizhou, Guangdong, China
Copyright © Huizhou Cantrack Technology Co., Ltd. All Rights Reserved. Sitemap “仲达荣”商标为惠州市仲达荣科技有限公司所有
Product
About
Support
News
Contact Us
Language
EN