Spread-spectrum signal source with Doppler analogue function

A spread-spectrum signal and analog function technology, applied in the field of spread-spectrum signal sources, can solve the problems of low integration, limited verification accuracy, analog accuracy, and low error verification accuracy.

Inactive Publication Date: 2008-08-27
BEIHANG UNIV
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  • Abstract
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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 limit

Method used

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  • Spread-spectrum signal source with Doppler analogue function
  • Spread-spectrum signal source with Doppler analogue function
  • Spread-spectrum signal source with Doppler analogue function

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Embodiment Construction

[0172] The present invention is a spread spectrum signal source with Doppler analog function, which is the transmitting part of the "intermediate frequency signal processor" in the invention patent of the applicant named "two-way ranging and time comparison processing terminal" , responsible for the realization of functions such as internal data generation, format arrangement, Doppler dynamic characteristic simulation, and data modulation and transmission of the IF signal processor.

[0173] The spread spectrum signal source with Doppler simulation function of the present invention can be mainly divided into three parts: Doppler dynamic simulation, data frame format arrangement and intermediate frequency signal modulation and transmission.

[0174] Among them, the Doppler dynamic simulation part mainly realizes the dynamic simulation of the motion state of the processor: through the design of the code NCO, the realization of the dynamic characteristics of the ranging pseudo-cod...

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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...

Claims

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Application Information

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IPC IPC(8): H04B17/00G01S5/02
Inventor 常青李雪徐勇刘磊张其善吴鑫山
Owner BEIHANG UNIV
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