SDR/service/service.py

import json
import uhd
import numpy as np
import threading

from dto.response_dto import ResponseDTO
from model.surveillance_radar import SurveillanceRadar
from model.jammer_radar import JammerRadar
from algo.jamming_signal_algo import JammingSignalAlgo
from algo.anti_jamming_signal_algo import AntiJammingSignalAlgo

# 定义一组通道常量
CHANNEL_1 = 0
CHANNEL_2 = 1
CHANNEL_3 = 2
CHANNEL_4 = 3

# 定义干扰、抗干扰策略集合，确保集合中的元素为合法的字符串常量
from common.strategy_enum import JammingPolicy, AntiJammingPolicy


class Service:
    usrp = None  # 静态类变量
    status = 0  # 静态类变量
    surveillance_radar = None  # 侦查雷达实例
    jammer_radar = None  # 干扰雷达实例
    _rlock = threading.RLock()  # 可重入锁

    @staticmethod
    def initialize_usrp():
        with Service._rlock:
            Service.get_sdr_status()
            if Service.status == 1:
                print('USRP设备已经初始化')
                return ResponseDTO.SUCCESS({"status": Service.status}).to_json()
            try:
                Service.usrp = uhd.usrp.MultiUSRP()
                print('------SDR Devices initialize success！------')
                #侦查雷达初始化
                Service.surveillance_radar = SurveillanceRadar(Service.usrp, rx=CHANNEL_1, tx=CHANNEL_1)
                # 干扰雷达初始化
                Service.jammer_radar = JammerRadar(Service.usrp, rx=CHANNEL_2, tx=CHANNEL_2)
                Service.status = 1
                return ResponseDTO.SUCCESS({"status": Service.status}).to_json()
            except Exception as e:
                print('SDR设备异常', e)
                Service.status = 0  # 初始化失败，状态置为0
                return ResponseDTO.ERROR_MS_DATA('SDR设备异常', {"status": Service.status, "Error": str(e)}).to_json()

    @staticmethod
    def get_sdr_status():
        with Service._rlock:
            if Service.status == 0:
                return ResponseDTO.ERROR_MS_DATA('SDR设备异常',{"status": Service.status, "Error": "SDR设备未初始化"}).to_json()
            try:
                samples = Service.usrp.recv_num_samps(1, 100e6, 1e6, [0], 50)
                if samples is None:
                    Service.status = 0  # 获取状态失败，状态置为0
                else:
                    Service.status = 1
                return ResponseDTO.SUCCESS({"status": Service.status}).to_json()
            except Exception as e:
                print('SDR设备异常', e)
                Service.status = 0  # 获取状态失败，状态置为0
                Service.usrp = None  # 重置USRP对象
                return ResponseDTO.ERROR_MS_DATA('SDR设备异常', {"status": Service.status, "Error": str(e)}).to_json()


    @staticmethod
    def data(payload):
        with Service._rlock:
            if Service.status == 0:
                return ResponseDTO.ERROR_MS_DATA('SDR设备异常',
                                                 {"status": Service.status, "Error": "SDR设备未初始化"}).to_json()
            # try:
            # 使用已初始化的雷达实例
            surveillance_radar = Service.surveillance_radar
            jammer_radar = Service.jammer_radar

            jamming_policy = payload.get('jamming_policy')
            anti_jamming_policy = payload.get('anti_jamming_policy')
            # 判断策略是否合法
            if not JammingPolicy.is_valid(jamming_policy) or not AntiJammingPolicy.is_valid(anti_jamming_policy):
                return ResponseDTO.ERROR_MS_DATA('策略不合法', {"status": Service.status, "Error": "策略不合法"}).to_json()
            # 打印对应策略
            print(' jamming_policy:', jamming_policy)
            print(' anti_jamming_policy:', anti_jamming_policy)
            # 根据策略选择算法
            jam_algorithm = Service._get_jamming_algorithm_method(jamming_policy)
            anti_jam_algorithm = Service._get_anti_jamming_algorithm(anti_jamming_policy)
            print(' jamming_algorithm:', jam_algorithm)
            print(' anti_jamming_algorithm:', anti_jam_algorithm)

            # 1. 应用发射端抗干扰算法（波形/频率捷变）
            tx_original = np.random.randn(100)
            if anti_jamming_policy in {AntiJammingPolicy.WAVEFORM_AGILITY.value, AntiJammingPolicy.FREQUENCY_AGILITY.value}:
                tx_processed = surveillance_radar.process_transmit_signal(
                    tx_signal=tx_original,
                    algorithm= anti_jam_algorithm,
                    sample_rate=1e6
                )
            else:
                tx_processed = tx_original

            # 生成干扰信号
            jammed_signal, lower_bound, upper_bound = jammer_radar.execute_jamming(
                algorithm=jam_algorithm,
                bandwidth=100e6,
                sample_rate=1e6,
                duration=0.1,
                gain=20
            ) 

            # 2.发送侦察信号
            import time
            from threading import Event
            signal_sent_event = Event()
            
            def send_signal_thread():
                tx_processed_signal = surveillance_radar.send_signal(
                    tx_signal=tx_processed,
                    duration=0.1,
                    center_freq=100e6,
                    sample_rate=1e6,
                    gain=20
                )
                signal_sent_event.set()
            
            import threading
            send_thread = threading.Thread(target=send_signal_thread)
            send_thread.start()
            
            # 5. 侦查雷达接收信号
            # 等待信号发送完成后再接收
            signal_sent_event.wait()
            rx_original = surveillance_radar.recv_signal(
                num_samples=100,
                sample_rate=1e6,
                center_freq=100e6
            )

            # 6. 将接收的原始信号与干扰信号结合
            combined_signal = rx_original + jammed_signal
            # 7. 接收端抗干扰处理（仅限接收端策略）
            processed_signal = combined_signal
            if anti_jamming_policy in {AntiJammingPolicy.POLARIZATION_FILTER.value} :
                processed_signal = surveillance_radar.apply_anti_jamming_processing(
                    rx_signal=combined_signal,
                    algorithm=anti_jam_algorithm,
                    sample_rate=1e6,
                    polarization_params={'angle': 45, 'ellipticity': 0.5}
                )

            # 类型检查并转换复数信号为实数
            if np.iscomplexobj(processed_signal):
                processed_signal = np.real(processed_signal)
            if np.iscomplexobj(jammed_signal):
                jammed_signal = np.real(jammed_signal)

            # 返回结果
            return ResponseDTO.SUCCESS({
                    "jamming_signal": np.real(jammed_signal).tolist(),
                    "anti_jamming_signal": np.real(processed_signal).flatten().tolist(),
                    "jamming_range": {
                        "upper": upper_bound,
                        "lower": lower_bound
                    }
                }).to_json()
            # except Exception as e:
            #     print('数据处理异常', e)
            #     return ResponseDTO.ERROR_MS_DATA('数据处理异常', {"status": Service.status, "Error": str(e)}).to_json()

    @staticmethod
    def _get_jamming_algorithm_method(policy: str) -> callable:
        # 干扰算法映射
        jam_algorithm_map = {
            JammingPolicy.FREQUENCY_MODULATION.value: JammingSignalAlgo.frequency_modulation,
            JammingPolicy.AMPLITUDE_MODULATION.value: JammingSignalAlgo.amplitude_modulation,
            JammingPolicy.REPEATER.value: JammingSignalAlgo.repeater_jamming,
            JammingPolicy.VELOCITY_DECEPTION.value: JammingSignalAlgo.velocity_deception,
            JammingPolicy.RANGE_DECEPTION.value: JammingSignalAlgo.range_deception
        }
        return jam_algorithm_map.get(policy)

    @staticmethod
    def _get_anti_jamming_algorithm(policy: str) -> callable:
        """
        统一抗干扰策略路由方法
        :param policy: 策略名称
        """
        anti_jam_algorithm_map = {
            AntiJammingPolicy.WAVEFORM_AGILITY.value: AntiJammingSignalAlgo.waveform_agility,
            AntiJammingPolicy.FREQUENCY_AGILITY.value: AntiJammingSignalAlgo.frequency_agility,
            AntiJammingPolicy.POLARIZATION_FILTER.value: AntiJammingSignalAlgo.polarization_filter
        }
        
        return anti_jam_algorithm_map.get(policy)