CN-122002345-A - Signal detection and transmission method and device and readable storage medium

Abstract

The application discloses a signal detection and transmission method and device and a readable storage medium, and relates to the technical field of communication, so as to improve echo power, reduce omission ratio and further improve perceived distance. The method comprises the steps of determining one or more detection sliding windows for receiving the LFM signals, and receiving echo signals of the LFM signals by utilizing the detection sliding windows and detecting, wherein the transmission time length of the LFM signals meets the following requirements that N_len >1us and N_len represents the transmission time length. The embodiment of the application can improve the echo power and reduce the omission ratio, thereby improving the perception distance.

Inventors

• JIANG YIMING
• GENG LINA
• LI LEI
• WANG JUNWEI
• WANG XI

Assignees

• 大唐移动通信设备有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1. A signal detection method, characterized in that an application receiving end comprises: Determining one or more detection windows for receiving the chirped LFM signal; Receiving the echo signal of the LFM signal by utilizing the detection sliding window and detecting; wherein, the transmission time of the LFM signal meets the following requirements: n_len >1us, n_len represents the transmission duration.
2. 2. The method of claim 1, wherein the determining one or more detection windows for receiving a chirped LFM signal comprises: and determining N_len detection sliding windows, wherein the window length of the Mth detection sliding window is Mus, M is more than or equal to 1 and less than or equal to N_len, and M is an integer.
3. 3. The method of claim 1, wherein receiving and detecting echo signals of the LFM signal using the detection sliding window comprises: If M < N_len is not less than 1, for an Mth detection sliding window, sliding in an X us time length after a signal receiving starting moment by taking M us as a sliding window length, receiving a first sensing waveform of the LFM signal, and detecting the first sensing waveform, wherein the first sensing waveform comprises a sensing waveform in M us before a transmitting ending moment of the LFM signal, and X=M+1; If m=n_len, for the nth detection sliding window, sliding in the whole receiving window of the LFM signal after the signal receiving start time, receiving a second sensing waveform of the LFM signal, and detecting the second sensing waveform, where the second sensing waveform is all sensing waveforms of the LFM signal.
4. 4. The method of claim 1, wherein the detection window for receiving the LFM signal comprises a detection window having a predetermined duration, wherein receiving and detecting the echo signal of the LFM signal using the detection window comprises: sliding the detection sliding window from the transmission moment of the LFM signal to obtain an echo signal, wherein the length of the echo signal is Lus; setting a signal in the first Nus in the echo signals to 0, wherein N=N_len, L is an integer greater than or equal to 1 and L is greater than or equal to N; Determining a matching signal, wherein the length of the matching signal is Nus, and the waveform adopted by the matching signal is the same as the waveform adopted by the LFM signal; searching echo signals of the LFM signals in the detection sliding window by taking the sending time of the LFM signals as a searching starting point; and matching the echo signals searched in the detection sliding window with the matching signals to obtain a detection result.
5. 5. A signal transmission method, applied to a transmitting end, comprising: transmitting an LFM signal, wherein the transmission time of the LFM signal meets the following requirements: n_len >1us, n_len represents the transmission duration.
6. 6. The method of claim 5, wherein the LFM signal comprises one or more different perceptual waveforms.
7. 7. The method of claim 6, wherein the perceived waveform comprises one or more of the following: a first waveform formed by combining or merging two sub-LFM waveforms; A second waveform formed by combining three sub-LFM pulses, or including a first portion formed based on two sub-LFM pulses adjacent in frequency among the three sub-LFM pulses, and a second portion formed based on a portion other than the pulses used to form the first portion among the three sub-LFM pulses; A third waveform formed by combining four sub-LFM pulses, or the third waveform comprising a third portion formed based on at least two of the four sub-LFM pulses that are adjacent in frequency and a fourth portion formed based on a portion other than the pulses used to form the third portion of the four sub-LFM pulses.
8. 8. The method of claim 7, wherein the step of determining the position of the probe is performed, If the first waveform is formed by combining two sub-LFM waveforms, a first sub-LFM pulse of the two sub-LFM pulses is an up-FM signal, a second sub-LFM pulse of the two sub-LFM pulses is a down-FM signal, or the first sub-LFM pulse is a down-FM signal, and the second sub-LFM pulse is an up-FM signal, or If the first waveform is formed by combining two sub-LFM waveforms, the two sub-LFM waveforms are combined into one frequency-modulated signal, and the frequency-modulated signal is an up-frequency-modulated signal or a down-frequency-modulated signal.
9. 9. The method of claim 7, wherein the step of determining the position of the probe is performed, If the second waveform is formed by combining the three sub-LFM pulses, the three sub-LFM pulses are combined into a frequency modulation signal, and the frequency modulation signal is an up frequency modulation signal or a down frequency modulation signal, or If the second waveform includes a first portion and a second portion, the frequency modulation direction corresponding to the first portion and the frequency modulation direction corresponding to the second portion are the same or different.
10. 10. The method of claim 9, wherein the step of determining the position of the substrate comprises, The first part is a first frequency-modulated signal formed by the total combination of two adjacent sub-LFM pulses in frequency, the second part is a second frequency-modulated signal formed by sub-LFM pulses except the two sub-LFM pulses, the frequency-modulated directions of the first frequency-modulated signal and the second frequency-modulated signal are the same or different, or The three sub-LFM pulses comprise a third sub-LFM pulse, a fourth sub-LFM pulse and a fifth sub-LFM pulse, the first part is a third frequency-modulated signal formed by combining all of the third sub-LFM pulse and a first sub-part of the fourth sub-LFM pulse, the second part is a fourth frequency-modulated signal formed by combining a second sub-part of the fourth sub-LFM pulse and the fifth sub-LFM pulse, the third sub-LFM pulse is adjacent to the fourth sub-LFM pulse in frequency, the fourth sub-LFM pulse is adjacent to the fifth sub-LFM pulse in frequency, the frequency-modulated directions of the third frequency-modulated signal and the fourth frequency-modulated signal are different, and the frequency difference between the first sub-part and the third sub-LFM pulse is smaller than the frequency difference between the second sub-part and the third sub-LFM pulse.
11. 11. The method of claim 7, wherein the step of determining the position of the probe is performed, If the third waveform is formed by combining four sub-LFM pulses, the four sub-LFM pulses are combined to form a frequency modulation signal, and the frequency modulation signal is an up frequency modulation signal or a down frequency modulation signal, or If the third waveform includes a third portion and a fourth portion, the frequency modulation direction corresponding to the third portion and the frequency modulation direction corresponding to the fourth portion are the same or different.
12. 12. The method of claim 11, wherein the step of determining the position of the probe is performed, The third part is a frequency modulation signal formed by combining two adjacent sub LFM pulses in frequency, the fourth part is formed by sub LFM pulses except the two sub LFM pulses, the frequency modulation direction corresponding to the third part is different from the frequency modulation direction corresponding to the fourth part, or The third part is a frequency modulation signal formed by combining three sub-LFM pulses adjacent in frequency, and the fourth part is a frequency modulation signal formed by sub-LFM pulses except for the three sub-LFM pulses, and the frequency modulation direction corresponding to the third part is the same as or different from the frequency modulation direction corresponding to the fourth part.
13. 13. The method according to any one of claims 6-12, further comprising: and determining a perception waveform corresponding to the transmitting end according to the configuration information of the upper node or the cell identifier corresponding to the transmitting end.
14. 14. The signal detection device is characterized by being applied to a receiving end and comprising a memory, a transceiver and a processor: the system comprises a memory for storing a computer program, a transceiver for receiving and transmitting data under the control of the processor, and a processor for reading the computer program in the memory and performing the following operations: determining one or more detection windows for receiving LFM signals; Receiving the echo signal of the LFM signal by utilizing the detection sliding window and detecting; wherein, the transmission time of the LFM signal meets the following requirements: n_len >1us, n_len represents the transmission duration.
15. 15. The apparatus of claim 14, wherein the determining one or more detection windows for receiving LFM signals comprises: and determining N_len detection sliding windows, wherein the window length of the Mth detection sliding window is Mus, M is more than or equal to 1 and less than or equal to N_len, and M is an integer.
16. 16. The apparatus of claim 15, wherein the receiving and detecting echo signals of the LFM signal using the detection sliding window comprises: If M < N_len is not less than 1, for an Mth detection sliding window, sliding in an X us time length after a signal receiving starting moment by taking M us as a sliding window length, receiving a first sensing waveform of the LFM signal, and detecting the first sensing waveform, wherein the first sensing waveform comprises a sensing waveform in a Mus before a transmitting ending moment of the LFM signal, and X=M+1; If m=n_len, for the nth detection sliding window, sliding in the whole receiving window of the LFM signal after the signal receiving start time, receiving a second sensing waveform of the LFM signal, and detecting the second sensing waveform, where the second sensing waveform is all sensing waveforms of the LFM signal.
17. 17. The apparatus of claim 14, wherein the detection window for receiving the LFM signal comprises a detection window having a predetermined duration, wherein the receiving and detecting the echo signal of the LFM signal using the detection window comprises: sliding the detection sliding window from the transmission moment of the LFM signal to obtain an echo signal, wherein the length of the echo signal is Lus; setting a signal in the first Nus in the echo signals to 0, wherein N=N_len, L is an integer greater than or equal to 1 and L is greater than or equal to N; Determining a matching signal, wherein the length of the matching signal is Nus, and the waveform adopted by the matching signal is the same as the waveform adopted by the LFM signal; searching echo signals of the LFM signals in the detection sliding window by taking the sending time of the LFM signals as a searching starting point; and matching the echo signals searched in the detection sliding window with the matching signals to obtain a detection result.
18. 18. A signal transmitting device is characterized by being applied to a transmitting end and comprising a memory, a transceiver and a processor: the system comprises a memory for storing a computer program, a transceiver for receiving and transmitting data under the control of the processor, and a processor for reading the computer program in the memory and performing the following operations: transmitting an LFM signal, wherein the transmission time of the LFM signal meets the following requirements: n_len >1us, n_len represents the transmission duration.
19. 19. The apparatus of claim 18, wherein the LFM signal comprises one or more different perceptual waveforms.
20. 20. The apparatus of claim 19, wherein the perceptual waveform comprises one or more of the following waveforms: a first waveform formed by combining or merging two sub-LFM waveforms; A second waveform formed by combining three sub-LFM pulses, or including a first portion formed based on two sub-LFM pulses adjacent in frequency among the three sub-LFM pulses, and a second portion formed based on a portion other than the pulses used to form the first portion among the three sub-LFM pulses; A third waveform formed by combining four sub-LFM pulses, or the third waveform comprising a third portion formed based on at least two of the four sub-LFM pulses that are adjacent in frequency and a fourth portion formed based on a portion other than the pulses used to form the third portion of the four sub-LFM pulses.

Description

Signal detection and transmission method and device and readable storage medium Technical Field The present application relates to the field of communications technologies, and in particular, to a signal detection method, a signal transmission method, a signal detection device, a signal transmission device, and a readable storage medium. Background The linear frequency modulation (Linear Frequency Modulation, LFM) signal has a larger product of time and frequency domain broadband, can obtain a larger pulse compression ratio, and is a signal form widely used by radar systems and sonar systems. Regarding the sensing signal used in the current industry, considering the maturity of radar sensing and the common signal of the communication system, the combination of LFM signal and orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM signal) is adopted at present. In the actual test process, the attenuation of the LFM signal is more serious than expected, so that enough echo signal energy is difficult to accumulate when receiving and detecting, and the perceived distance is influenced. Disclosure of Invention The embodiment of the application provides a signal detection and transmission method, a signal detection and transmission device and a readable storage medium, which are used for improving echo power and reducing omission ratio so as to improve perceived distance. In a first aspect, an embodiment of the present application provides a signal detection method, where an application receiving end includes: determining one or more detection windows for receiving LFM signals; Receiving the echo signal of the LFM signal by utilizing the detection sliding window and detecting; wherein, the transmission time of the LFM signal meets the following requirements: n_len >1us, n_len represents the transmission duration. Optionally, the determining one or more detection windows for receiving LFM signals includes: and determining N_len detection sliding windows, wherein the window length of the Mth detection sliding window is Mus, M is more than or equal to 1 and less than or equal to N_len, and M is an integer. Optionally, the receiving and detecting the echo signal of the LFM signal by using the detection sliding window includes: If M < N_len is not less than 1, for an Mth detection sliding window, sliding in an X us time length after a signal receiving starting moment by taking M us as a sliding window length, receiving a first sensing waveform of the LFM signal, and detecting the first sensing waveform, wherein the first sensing waveform comprises a sensing waveform in a Mus before a transmitting ending moment of the LFM signal, and X=M+1; If m=n_len, for the nth detection sliding window, sliding in the whole receiving window of the LFM signal after the signal receiving start time, receiving a second sensing waveform of the LFM signal, and detecting the second sensing waveform, where the second sensing waveform is all sensing waveforms of the LFM signal. Optionally, the detection sliding window for receiving the LFM signal includes a detection sliding window with a preset duration, and the receiving and detecting the echo signal of the LFM signal by using the detection sliding window includes: sliding the detection sliding window from the transmission moment of the LFM signal to obtain an echo signal, wherein the length of the echo signal is Lus; setting a signal in the first Nus in the echo signals to 0, wherein N=N_len, L is an integer greater than or equal to 1 and L is greater than or equal to N; Determining a matching signal, wherein the length of the matching signal is Nus, and the waveform adopted by the matching signal is the same as the waveform adopted by the LFM signal; searching echo signals of the LFM signals in the detection sliding window by taking the sending time of the LFM signals as a searching starting point; and matching the echo signals searched in the detection sliding window with the matching signals to obtain a detection result. In a second aspect, an embodiment of the present application provides a signal sending method, which is applied to a sending end, and includes: transmitting an LFM signal, wherein the transmission time of the LFM signal meets the following requirements: n_len >1us, n_len represents the transmission duration. Optionally, the LFM signal comprises one or more different perceptual waveforms. Optionally, the perceived waveform includes one or more of the following: a first waveform formed by combining or merging two sub-LFM waveforms; A second waveform formed by combining three sub-LFM pulses, or including a first portion formed based on two sub-LFM pulses adjacent in frequency among the three sub-LFM pulses, and a second portion formed based on a portion other than the pulses used to form the first portion among the three sub-LFM pulses; A third waveform formed by combining four sub-LFM pulses, or the third waveform comprising a third p