Method for producing noise wave base belt analog signals of space-borne two-foundation radar

A baseband analog signal, bistatic radar technology, used in radio wave measurement systems, radio wave reflection/re-radiation, use of re-radiation and other directions, can solve the problem of inability to calculate the time and frequency of clutter

Inactive Publication Date: 2007-03-14
TSINGHUA UNIV
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Problems solved by technology

Therefore, due to the influence of the earth's rotation, the clutter signal generation method of the airborne radar cannot be used to calculate the clutter time frequency in the spaceborne situation

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  • Method for producing noise wave base belt analog signals of space-borne two-foundation radar
  • Method for producing noise wave base belt analog signals of space-borne two-foundation radar
  • Method for producing noise wave base belt analog signals of space-borne two-foundation radar

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Embodiment Construction

[0156] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0157] The method of the present invention can be divided into 6 steps, and the specific process is as shown in accompanying drawing 2. According to this process, the parameters of the spaceborne bistatic radar are set, and the system block diagram shown in Figure 1 is used to realize it. The system in Figure 1 uses a high-performance server as the hardware platform, develops the spaceborne bistatic radar clutter simulation signal software under the windows operating system, runs the corresponding process, and generates the baseband simulation data of the spaceborne radar according to the set parameters. It is stored in the server memory, and then the standard PCI bus output board sends the data to the spaceborne base radar signal processing system according to the transmission protocol. Because the clutter signal characteristics are...

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Abstract

The related clutter baseband signal generation method for satellite-carried bistatic radar comprises: setting initial condition, building the clutter equidistance ring model; deciding the clutter unit validation, calculating the clutter unit motion vector led by earth rotation; then, according to satellite position and orbit parameters, calculating satellite velocity vector and the corresponding time frequency and space frequency for clutter unit; summarizing all clutter unit space-time 2D fast-beat to calculate clutter covariance matrix and clutter data for succeeding algorithm processing.

Description

technical field [0001] The invention relates to a method for generating radar clutter signals, in particular to a method for generating spaceborne bistatic radar clutter signals. Background technique [0002] Space-borne bistatic radar (bistatic space based radar, BSBR) is a new concept of radar system proposed in the world recently, it is mainly used for the detection of military moving targets on the ground or in the air. The transmitter and receiver of the radar system are respectively placed on two different satellites. Due to the high altitude of the satellite, the coverage of the radar system is very large, and it can provide a wider range and more timely early warning without being bound by national boundaries. Play a very important role in national defense. [0003] The spaceborne radar is irradiated from the satellite to the ground. The transmitter emits pulse trains. In addition to receiving useful echo signals from moving targets, the receiver will also receive a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/292G01S7/32G01S7/41G01S13/00
Inventor 李华汤俊严军彭应宁张卫杰
Owner TSINGHUA UNIV
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