Spread-spectrum signal source with Doppler analogue function

Abstract

The invention relates to a spread spectrum signal source provided with the Doppler simulation function, including a Doppler dynamic simulation part, a data framing format arrangement and an IF signal modulated transmission part; the Doppler dynamic simulation part realizes the dynamic simulation of the motion state of a processor, including that the carrier NCO control word is figured out according to the control panel or the control of the host computer and is transmitted to the emission channel subsystem to control the carrier used for generating the Doppler frequency; meanwhile, the simulation process of the code clock Doppler frequency is processed synchronously. The data framing format arrangement part mainly realizes the generation and framing of the data with transmission information in the processor. The IF signal modulated transmission part realizes the code spread spectrum modulation of the information data and the PN code data; meanwhile, the information data and the PN code are transmitted together with the generated digital carrier; on the exterior of the software, the peripheral modulator is used to realize the carrier modulation and transmit the whole IF signal through the RF front-end.

Description

(1) Technical field: [0001] The invention relates to a spread spectrum signal source with a Doppler analog function, which belongs to the technical field of aerospace measurement and control communication. (two) background technology: [0002] The core of the aerospace measurement and control communication system based on spread spectrum technology is to introduce digital communication technologies such as pseudo-code spread spectrum, pseudo-code ranging, and code division multiple access into the measurement and control system to realize satellite telemetry, remote control, ranging, speed measurement, Tracking, angle measurement, data transmission and other functions to complete measurement and control tasks, and realize multi-target measurement and control communication by code division multiple access. [0003] The principle of radio ranging is to measure the transmission delay of radio waves. First transmit radio waves, and then measure the time delay τ of the return si...

AI Technical Summary

Problems solved by technology

[0011] (1) Each device is independent of each other, the system is complex, and the integration level is low

[0012] (2) The verification accuracy of the ranging accuracy error is limited by the simulation accuracy of the actual carrier motion, or the signal delay simulation accuracy of the channel simulator, and the error verification accuracy is generally not high

Images