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A method and device for generating X-band unidirectional ranging signals for deep space exploration

A one-way ranging and deep space exploration technology, applied in electric pulse generator circuits, radio wave measurement systems, instruments, etc., can solve the problems of complex circuit structure, large device size, poor versatility, etc. The effect of small size and low power consumption

Active Publication Date: 2017-09-29
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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Problems solved by technology

[0004] The DOR signal is a side tone signal modulated on the main carrier through phase modulation. Since the X-band operating frequency is relatively high, you can choose to modulate it at a lower frequency, such as the S-band, and then obtain the X through mixing or frequency multiplication. Frequency band DOR signal, using this method the circuit structure is more complicated
The realization of two frequency division and ten frequency division generally requires the use of a special frequency divider, which is convenient to use and has a simple circuit, but the price is more expensive and the versatility is poor
And because it uses two frequency multipliers, the device is bulky

Method used

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  • A method and device for generating X-band unidirectional ranging signals for deep space exploration
  • A method and device for generating X-band unidirectional ranging signals for deep space exploration
  • A method and device for generating X-band unidirectional ranging signals for deep space exploration

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Embodiment Construction

[0045] The present invention will be described in detail below in terms of specific embodiments in conjunction with the accompanying drawings. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It is to be noted that other embodiments may be utilized or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the invention.

[0046] In an embodiment of a method for generating a X-band one-way ranging signal for deep space exploration provided by the present invention, as Figure 4 shown, including:

[0047] Step 1, dividing the initial reference signal generated by the crystal oscillator into a first reference signal, a second reference signal, and a third reference signal,

[0048] Step 2, performing frequency multiplication on the first reference signal to obtain an X-band carrier signal,

[0...

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Abstract

The invention provides a method and a device for generating X-frequency band one-way ranging signals for deep space exploration. The method provided by the invention can generate one-way ranging sidetone signals in the X-frequency band. The device provided by the invention comprises simulation devices such as a crystal oscillator, a frequency divider, a low-pass filter, a frequency multiplier, a phase shifter and the like, and turn-off of DOR (Differential One-way Ranging) sidetone signals can be controlled through an instruction. The crystal oscillator generates initial reference signals, one path of the initial reference signals are inputted into the frequency multiplier after power division, the frequency multiplier generates X-frequency band carriers, another path of the initial reference signals are inputted into a divide-by-two frequency divider, a left path of the initial reference signals are inputted into a divide-by-ten frequency divider, and two paths of DOR sidetone signals are generated respectively. Phase modulation is carried out on the two paths of DOR sidetone signals in the X-frequency band, and the two paths of DOR sidetone signals are outputted after being amplified and isolated. Divide-by-two frequency division and divide-by-ten frequency division are completed by a decimal counter. The X-frequency band one-way ranging signals generated by using the method provided by the invention can complete a function of accurate ranging for a deep space probe by being matched with relevant ground station equipment, thereby being applicable to the fields of lunar exploration, Mars exploration and the like.

Description

technical field [0001] The invention relates to a space-borne phase modulation transmitter, in particular to a method and device for generating an X-band one-way ranging signal for deep space exploration. Background technique [0002] In some key stages of deep space exploration, such as the approach stage before landing on a planet and the orbit capture stage, precise orbit determination of the probe is required. Very Long Baseline Interferometry (VLBI) technology is one of the important means for deep space exploration and precise orbit determination. NASA, European ESA and my country have widely used VLBI technology in lunar probes and deep space exploration. The precision measuring track of the device. [0003] The VLBI technology requires the use of DOR (Differential One-way Ranging) sidetone signals, whose spectral lines contain a main carrier and several sidetone signals. Considering that the frequency band assigned to the deep space exploration mission has a bandwid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/282G01S7/35H03K3/02
CPCG01S7/282G01S7/35H03K3/02
Inventor 王文伟董巍陈翔金骏
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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