CN210041808U

CN210041808U - ESM/ELINT receiver based on frequency guiding

Info

Publication number: CN210041808U
Application number: CN201921305050.5U
Authority: CN
Inventors: 柴桦; 高俊杰; 马玉桂; 马宇飞; 仲崇斌; 郭伟建
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-02-07
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a ESM/ELINT receiver based on frequency guide, include: the device comprises a data acquisition card (1), a single-bit ESM receiver (2), a multiphase filter frequency search receiver A (3), a multiphase filter frequency search receiver B (4), a main control module (5) and a power module (6). The utility model discloses a computer technology, parallel bus technique, digital filtering technique effectively combine single bit ESM receiver and heterogeneous filtering frequency search receiver, constitute ESM/ELINT receiver based on frequency guide, have improved signal capture probability and signal processing ability, have characteristics such as capture probability height, change the digit number height, signal processing ability reinforce.

Description

ESM/ELINT receiver based on frequency guiding

Technical Field

The invention belongs to the technical field of communication, and particularly relates to an ESM/ELINT receiver based on frequency guiding.

Background

The radar receivers on the market at present mainly have two types, the multiphase filtering ESM/ELINT receiver has strong signal processing capacity, but has a complex structure and large implementation difficulty, and the single-bit ESM receiver has a small volume, a simple structure and limited signal processing capacity, so that the two types can be combined together to form the frequency-guide-based ESM/ELINT receiver, which not only has strong signal processing capacity and certain interception probability, but also reduces the implementation difficulty of a system. The single-bit ESM receiver has low quantization digit and small dynamic range of double signals, affects the detection of simultaneously arriving signals, can not keep the complete picture of the signals and can not perform intra-pulse analysis on the signals, and affects the capability of the receiver to adapt to complex signal environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the ESM/ELINT receiver based on frequency guiding realizes effective combination of a single-bit ESM receiver and a polyphase filtering frequency search receiver, forms the ESM/ELINT receiver based on frequency guiding, and improves signal interception probability and signal processing capacity.

The technical scheme of the utility model is that: an ESM/ELINT receiver based on frequency steering, comprising: the device comprises a data acquisition card, a single-bit ESM receiver, a multi-phase filtering frequency search receiver A, a multi-phase filtering frequency search receiver B, a main control module and a power supply module;

the data acquisition card is used for sampling a high-speed band-pass of a medium-frequency broadband signal and measuring the pulse frequency, the pulse width and the repetition interval, the sampling frequency is 2.25GHz, the quantization digit is 8bit, and the input frequency range of an intermediate-frequency broadband signal is 1.1 GH-2.7 GHz; the data acquisition card comprises a low-bit A/D converter and a digital signal processor, wherein the low-bit A/D converter is connected with the digital signal processor through a self-defined high-speed data bus, and the digital signal processor is used for realizing single-bit FFT operation and simultaneously carrying out signal detection, parameter measurement and signal pre-sorting;

the single-bit ESM receiver is used for directly receiving intermediate frequency broadband signals and processing the signals, retrieving useful signal frequencies preset by a user from the received intermediate frequency broadband signals, guiding the multiphase filter frequency search receiver A and the multiphase filter frequency search receiver B to complete useful signal frequency analysis and parameter measurement by using the useful signal frequencies, and identifying pulse frequency, amplitude, width and repetition interval and pulse modulation types by the parameter measurement;

the polyphase filter frequency search receiver A and the polyphase filter frequency search receiver B are mainly used for digitally filtering intermediate frequency signal data transmitted by the data acquisition card, dividing the whole input frequency band into 16 sub-channels, wherein the effective width of each sub-channel is 19.25MHz, the number of output data bits is 8 bits, and the output data rate is 68.125 Mbyte/S; when the width of the input data bus reaches 256 bits, the input data rate is reduced to 1/16 of the sampling rate, 16 output channels are arranged, and 128 output data lines are provided; after receiving the intermediate frequency signal data transmitted by the data acquisition card, the multiphase filter frequency search receiver A and the multiphase filter frequency search receiver B firstly condition the data, distribute the input intermediate frequency signal data to corresponding input ends and divide the input intermediate frequency signal data into different channels, and carry out signal detection, parameter measurement and pre-sorting on the intermediate frequency signal data in each channel; measuring parameters to give pulse frequency, amplitude, width and repetition interval, and identifying the type of intra-pulse modulation and modulation parameters; the parameter measurement result is pre-sorted and then sent to the main control module for final model identification and individual identification;

the main control module is used for controlling the data acquisition card to sample a medium-frequency broadband signal at a high speed in a band-pass manner, controlling the single-bit ESM receiver to complete the detection and the reception of a useful signal of a medium-frequency broadband signal, completing the frequency guidance for controlling the multiphase filter frequency search receiver A and the multiphase filter frequency search receiver B, and controlling the multiphase filter frequency search receiver A and the multiphase filter frequency search receiver B to carry out digital filtering on medium-frequency signal data transmitted by the data acquisition card to obtain pure medium-frequency broadband signal data;

the power module is used for providing power for the single-bit ESM receiver, the multiphase filter frequency search receiver A, the multiphase filter frequency search receiver B and the main control module.

The utility model discloses a computer technology, parallel bus technique, digital filtering technique effectively combine single bit ESM receiver and heterogeneous filtering frequency search receiver, constitute ESM/ELINT receiver based on frequency guide, have improved signal capture probability and signal processing ability, have characteristics such as capture probability height, change the digit number height, signal processing ability reinforce.

Drawings

Fig. 1 is a schematic diagram of the system of the present invention.

Detailed Description

Example 1: referring to fig. 1, a frequency-steering based ESM/ELINT receiver includes: the device comprises a data acquisition card 1, a single-bit ESM receiver 2, a multiphase filter frequency search receiver A3, a multiphase filter frequency search receiver B4, a main control module 5 and a power supply module 6;

the data acquisition card 1 is used for sampling a high-speed band-pass of a medium-frequency broadband signal and measuring the pulse frequency, the pulse width and the repetition interval, the sampling frequency is 2.25GHz, the quantization digit is 8 bits, and the input frequency range of an intermediate-frequency broadband signal is 1.1 GH-2.7 GHz; the data acquisition card 1 comprises a low-bit A/D converter and a digital signal processor, wherein the low-bit A/D converter is connected with the digital signal processor through a self-defined high-speed data bus, and the digital signal processor is used for realizing single-bit FFT operation and simultaneously carrying out signal detection, parameter measurement and signal pre-sorting;

the single-bit ESM receiver 2 is used for directly receiving intermediate frequency broadband signals and processing the signals, retrieving useful signal frequencies preset by a user from the received intermediate frequency broadband signals, guiding the multiphase filter frequency search receiver A3 and the multiphase filter frequency search receiver B4 to complete useful signal frequency analysis and parameter measurement by using the useful signal frequencies, giving pulse frequency, amplitude, width and repetition interval by the parameter measurement, and identifying the type of intra-pulse modulation;

the polyphase filter frequency search receiver a3 and the polyphase filter frequency search receiver B4 are mainly used for digitally filtering intermediate frequency signal data transmitted by the data acquisition card 1, and dividing the whole input frequency band into 16 sub-channels, wherein the effective width of each sub-channel is 19.25MHz, the number of output data bits is 8 bits, and the output data rate is 68.125 Mbyte/S; when the width of the input data bus reaches 256 bits, the input data rate is reduced to 1/16 of the sampling rate, 16 output channels are arranged, and 128 output data lines are provided; after receiving the intermediate frequency signal data transmitted by the data acquisition card 1, the polyphase filter frequency search receiver a3 and the polyphase filter frequency search receiver B4 firstly condition the data, distribute the input intermediate frequency signal data to corresponding input ends, divide the input intermediate frequency signal data into different channels, and perform signal detection, parameter measurement and pre-sorting on the intermediate frequency signal data in each channel; measuring parameters to give pulse frequency, amplitude, width and repetition interval, and identifying the type of intra-pulse modulation and modulation parameters; the parameter measurement results are pre-sorted and then sent to the main control module 5 for final model identification and individual identification;

the main control module 5 is configured to control the data acquisition card 1 to perform high-speed bandpass sampling on a mid-frequency wideband signal, control the single-bit ESM receiver 2 to complete detection and reception of a useful signal of an intermediate-frequency wideband signal, complete frequency guidance for controlling the polyphase filter frequency search receiver A3 and the polyphase filter frequency search receiver B4, and control the polyphase filter frequency search receiver A3 and the polyphase filter frequency search receiver B4 to perform digital filtering on intermediate-frequency signal data transmitted by the data acquisition card 1, so as to obtain pure intermediate-frequency wideband signal data;

the power module 6 is configured to provide power to the single-bit ESM receiver 2, the polyphase filter frequency search receiver a3, the polyphase filter frequency search receiver B4, and the main control module 5.

Claims

1. An ESM/ELINT receiver based on frequency steering, comprising: the device comprises a data acquisition card (1), a single-bit ESM receiver (2), a multiphase filter frequency search receiver A (3), a multiphase filter frequency search receiver B (4), a main control module (5) and a power module (6);

the data acquisition card (1) is used for sampling a high-speed band-pass of a medium-frequency broadband signal and measuring the pulse frequency, the pulse width and the repetition interval, the sampling frequency is 2.25GHz, the quantization digit is 8 bits, and the input frequency range of an intermediate-frequency broadband signal is 1.1 GH-2.7 GHz; the data acquisition card (1) comprises a low-bit A/D converter and a digital signal processor, wherein the low-bit A/D converter is connected with the digital signal processor through a self-defined high-speed data bus, and the digital signal processor is used for realizing single-bit FFT operation and simultaneously carrying out signal detection, parameter measurement and signal pre-sorting;

the single-bit ESM receiver (2) is used for directly receiving intermediate frequency broadband signals and processing the signals, retrieving useful signal frequencies preset by a user from the received intermediate frequency broadband signals, guiding the polyphase filter frequency search receiver A (3) and the polyphase filter frequency search receiver B (4) to complete useful signal frequency analysis and parameter measurement by using the useful signal frequencies, giving pulse frequency, amplitude, width and repetition interval by the parameter measurement, and identifying the type of intra-pulse modulation;

the polyphase filter frequency search receiver A (3) and the polyphase filter frequency search receiver B (4) are mainly used for digitally filtering intermediate frequency signal data transmitted by the data acquisition card (1), dividing the whole input frequency band into 16 sub-channels, wherein the effective width of each sub-channel is 19.25MHz, the number of output data bits is 8 bits, and the output data rate is 68.125 Mbyte/S; when the width of the input data bus reaches 256 bits, the input data rate is reduced to 1/16 of the sampling rate, 16 output channels are arranged, and 128 output data lines are provided; after receiving the intermediate frequency signal data transmitted by the data acquisition card (1), the multiphase filter frequency search receiver A (3) and the multiphase filter frequency search receiver B (4) firstly condition the data, distribute the input intermediate frequency signal data to corresponding input ends, divide the input intermediate frequency signal data into different channels, and perform signal detection, parameter measurement and pre-sorting on the intermediate frequency signal data in each channel; measuring parameters to give pulse frequency, amplitude, width and repetition interval, and identifying the type of intra-pulse modulation and modulation parameters; the parameter measurement results are pre-sorted and then sent to the main control module (5) for final model identification and individual identification;

the main control module (5) is used for controlling the data acquisition card (1) to sample a medium-frequency broadband signal at a high speed band pass, controlling the single-bit ESM receiver (2) to complete the detection and reception of a useful signal of the medium-frequency broadband signal, completing the frequency guidance for controlling the multiphase filter frequency search receiver A (3) and the multiphase filter frequency search receiver B (4), and controlling the multiphase filter frequency search receiver A (3) and the multiphase filter frequency search receiver B (4) to perform digital filtering on the medium-frequency signal data transmitted by the data acquisition card (1) to obtain pure medium-frequency broadband signal data;

the power supply module (6) is used for supplying power to the single-bit ESM receiver (2), the multiphase filtering frequency search receiver A (3), the multiphase filtering frequency search receiver B (4) and the main control module (5).