A Study on Multi-Bit Processing Scheme of GPS Receiver for Fail-Safe Seaway

Cho, Deuk-Jae; Oh, Se-Woong; Suh, Sang-Hyun

Journal of Navigation and Port Research 2005;29(10):877-882.
Published online December 31, 2005.

Fail-Safe Seaway를 위한 GPS 수신기의 다중비트처리기법 연구

조득재, 오세웅, 서상현

A Study on Multi-Bit Processing Scheme of GPS Receiver for Fail-Safe Seaway

Deuk-Jae Cho, Se-Woong Oh, Sang-Hyun Suh

Abstract

It is necessary that Fail-Safe Seaway technology providing a continuous navigation solution though fault of navigation system is occurred in sea. This paper focus on signal processing of GPS receiver, one of receivers using the software radio technology to implement a integrated radio navigation system including satellite-based and ground-based navigation systems. It is difficult to implement the software GPS receivers using a commercial processor bemuse of the heavy computational burden for processing the GPS signals in real time. This paper proposes an efficient multi-bit GPS signal processing scheme to reduce the computational burden for processing the GPS signals in the software GPS receiver. The proposed scheme uses a compression concept of the multi-bit replica signals and patterned look-up table method to generate the correlation value between the GPS signals and the replica signals.

Key Words: 소프트웨어 GPS 수신기; Fail-Safe Seaway;Radio navigation;Software GPS receiver;Multi-bit processing