GB/T 43373-2023Space data and information transfer systems—Technical requirements for Pseudo-Noise (PN) ranging in deep space TT&C (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

Introduction

High-precision radio ranging is of great significance to deep space navigation and radio scientific research. Regenerative pseudocode ranging can effectively avoid ranging Forwarding noise significantly improves ranging accuracy in long-distance, weak-signal deep space measurement and control scenarios. Pseudo-code ranging requires spacecraft and ground stations to be unified The relevant technical requirements are complex and wide-ranging, and need to be standardized and clear; the interactive support between institutions for international cooperation in deep space measurement and control also requires corresponding The technical system should be compatible with international standards.

This document mainly clarifies the technical requirements related to regenerated pseudo-code ranging, and also gives the related technical requirements for forwarding pseudo-code ranging. ordinary feelings Under such circumstances, it is recommended that deep space measurement and control pseudo-code ranging adopt the regeneration method rather than the forwarding method. Before the pseudocode is captured, the spacecraft can forward the pseudocode and perform Forward pseudocode ranging.

1 Scope

This document specifies the pseudo code pattern, ground station uplink processing, spacecraft processing, and ground station downlink for deep space measurement and control regeneration/forwarding pseudo code ranging. processing requirements.

This document is applicable to the design of spacecraft and ground measurement and control equipment, and space-ground interface design using deep space measurement and control regeneration/forwarding pseudo-code ranging technology.

It is used as a reference for metering and near-earth measurement and control.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 42041 Aerospace terminology space data and information transmission

3 Terms and definitions

The terms and definitions defined in GB/T 42041 and the following apply to this document.

3.3 A weighted balanced Tausworthe code obtained by a certain logical combination of six periodic component codes, in which the weight of the component code with the shortest period

3.2 A weighted balanced Tausworthe code obtained by a certain logical combination of six periodic component codes, in which the weight of the component code with the shortest period