#!/usr/bin/env python3 """ Post-Launch Monitoring Implementation Trajectory verification, system status monitoring, abort procedures, and contingency planning """ import json import math import datetime from typing import Dict, List, Optional, Any, Union class PostLaunchMonitoringSystem: def __init__(self): self.monitoring_status = { 'trajectory': 'NOMINAL', 'systems': 'NOMINAL', 'communications': 'NOMINAL', 'power': 'NOMINAL', 'thermal': 'NOMINAL' } self.abort_conditions = { 'CAT_1': ['total_power_loss', 'complete_communication_failure', 'uncontrolled_spin_rate>10_deg/s'], 'CAT_2': ['primary_comms_failure', 'attitude_control_failure', 'critical_system_overheat'], 'CAT_3': ['secondary_system_failure', 'degraded_performance', 'approaching_resource_limits'] } def trajectory_verification(self, telemetry_data: Dict) -> Dict: """Verify spacecraft trajectory against expected parameters""" verification_results = { 'timestamp': datetime.datetime.now().isoformat(), 'status': 'NOMINAL', 'checks_performed': [], 'anomalies': [] } # Orbital parameter checks current_orbit = telemetry_data.get('orbital_parameters', {}) expected_orbit = telemetry_data.get('expected_orbit', {}) checks = [ { 'parameter': 'semi_major_axis', 'current': current_orbit.get('semi_major_axis', 0), 'expected': expected_orbit.get('semi_major_axis', 0), 'tolerance': 0.001 }, { 'parameter': 'eccentricity', 'current': current_orbit.get('eccentricity', 0), 'expected': expected_orbit.get('eccentricity', 0), 'tolerance': 0.0001 }, { 'parameter': 'inclination', 'current': current_orbit.get('inclination', 0), 'expected': expected_orbit.get('inclination', 0), 'tolerance': 0.01 } ] for check in checks: expected = check['expected'] current = check['current'] tolerance = check['tolerance'] if expected > 0: deviation = abs((current - expected) / expected) status = 'PASS' if deviation <= tolerance else 'FAIL' verification_results['checks_performed'].append({ 'parameter': check['parameter'], 'current': current, 'expected': expected, 'deviation_percent': deviation * 100, 'status': status }) if status == 'FAIL': verification_results['anomalies'].append( f"{check['parameter']} deviation exceeds tolerance" ) verification_results['status'] = 'ANOMALY' return verification_results def system_health_monitoring(self, telemetry_data: Dict) -> Dict: """Comprehensive system health monitoring""" health_report = { 'timestamp': datetime.datetime.now().isoformat(), 'overall_status': 'NOMINAL', 'subsystems': {}, 'alerts': [] } # Power system monitoring power_status = self.check_power_system(telemetry_data) health_report['subsystems']['power'] = power_status # Communication system monitoring comm_status = self.check_communication_system(telemetry_data) health_report['subsystems']['communications'] = comm_status # Attitude control system monitoring attitude_status = self.check_attitude_control(telemetry_data) health_report['subsystems']['attitude_control'] = attitude_status # Thermal system monitoring thermal_status = self.check_thermal_system(telemetry_data) health_report['subsystems']['thermal'] = thermal_status # Aggregate alerts for subsystem, status in health_report['subsystems'].items(): if status.get('critical_alerts'): health_report['alerts'].extend(status['critical_alerts']) health_report['overall_status'] = 'CRITICAL' elif status.get('warnings'): health_report['alerts'].extend(status['warnings']) if health_report['overall_status'] == 'NOMINAL': health_report['overall_status'] = 'WARNING' return health_report def check_power_system(self, telemetry: Dict) -> Dict: """Monitor power system health""" power_data = telemetry.get('power', {}) battery_level = power_data.get('battery_percent', 100) solar_voltage = power_data.get('solar_voltage', 30) power_margin = power_data.get('power_margin', 50) status = { 'battery_level': battery_level, 'solar_voltage': solar_voltage, 'power_margin': power_margin, 'critical_alerts': [], 'warnings': [] } # Critical alerts if battery_level < 20: status['critical_alerts'].append('CRITICAL: Battery below 20%') if power_margin < 0: status['critical_alerts'].append('CRITICAL: Negative power margin') if solar_voltage < 25: status['critical_alerts'].append('CRITICAL: Solar array voltage low') # Warnings if battery_level < 40: status['warnings'].append('WARNING: Battery level below 40%') if power_margin < 10: status['warnings'].append('WARNING: Low power margin') return status def check_communication_system(self, telemetry: Dict) -> Dict: """Monitor communication system health""" comm_data = telemetry.get('communications', {}) last_contact = comm_data.get('last_contact_minutes', 0) signal_strength = comm_data.get('signal_strength', -80) bit_error_rate = comm_data.get('bit_error_rate', 0) status = { 'last_contact_minutes': last_contact, 'signal_strength': signal_strength, 'bit_error_rate': bit_error_rate, 'critical_alerts': [], 'warnings': [] } if last_contact > 120: status['critical_alerts'].append('CRITICAL: No contact for >2 hours') if signal_strength < -120: status['critical_alerts'].append('CRITICAL: Signal strength too low') if bit_error_rate > 1e-4: status['critical_alerts'].append('CRITICAL: High bit error rate') if last_contact > 60: status['warnings'].append('WARNING: No contact for >1 hour') if bit_error_rate > 1e-6: status['warnings'].append('WARNING: Elevated bit error rate') return status def check_attitude_control(self, telemetry: Dict) -> Dict: """Monitor attitude control system""" attitude_data = telemetry.get('attitude', {}) angular_rate = attitude_data.get('angular_rate', 0.1) pointing_error = attitude_data.get('pointing_error', 0.5) status = { 'angular_rate': angular_rate, 'pointing_error': pointing_error, 'critical_alerts': [], 'warnings': [] } if angular_rate > 10: status['critical_alerts'].append('CRITICAL: Uncontrolled spin rate') if pointing_error > 5: status['critical_alerts'].append('CRITICAL: Large pointing error') if angular_rate > 5: status['warnings'].append('WARNING: High angular rate') if pointing_error > 2: status['warnings'].append('WARNING: Pointing error elevated') return status def check_thermal_system(self, telemetry: Dict) -> Dict: """Monitor thermal subsystem health""" thermal_data = telemetry.get('thermal', {}) status = { 'temperatures': thermal_data, 'critical_alerts': [], 'warnings': [] } thermal_limits = { 'electronics_bay': {'min': -10, 'max': 50}, 'battery_pack': {'min': 0, 'max': 40}, 'solar_arrays': {'min': -40, 'max': 85}, 'propulsion': {'min': -20, 'max': 60} } for component, temps in thermal_data.items(): if component in thermal_limits: current_temp = temps.get('current', 20) limits = thermal_limits[component] if current_temp < limits['min'] or current_temp > limits['max']: status['critical_alerts'].append( f'CRITICAL: {component} temperature out of bounds' ) elif abs(current_temp - 25) > 15: status['warnings'].append( f'WARNING: {component} temperature suboptimal' ) return status def abort_procedure_manager(self, condition: str, severity: str) -> Dict: """Manage abort procedures based on conditions and severity""" abort_actions = { 'CAT_1': { 'response_time': 'IMMEDIATE', 'actions': [ 'SHUTDOWN_ALL_NON_ESSENTIAL_SYSTEMS', 'ENTER_SAFE_MODE_ATTITUDE', 'ACTIVATE_EMERGENCY_BEACON', 'TRANSMIT_LAST_KNOWN_TELEMETRY', 'ATTEMPT_GROUND_STATION_CONTACT' ] }, 'CAT_2': { 'response_time': '< 5 minutes', 'actions': [ 'SWITCH_TO_REDUNDANT_SYSTEMS', 'REDUCE_POWER_CONSUMPTION', 'OPTIMIZE_COMMUNICATION_WINDOWS', 'ENABLE_DIAGNOSTIC_MODE' ] }, 'CAT_3': { 'response_time': '< 30 minutes', 'actions': [ 'LOG_WARNING_CONDITION', 'INCREASE_MONITORING_FREQUENCY', 'PREPARE_CONTINGENCY_PLANS', 'NOTIFY_GROUND_OPERATIONS' ] } } procedure = { 'timestamp': datetime.datetime.now().isoformat(), 'condition': condition, 'severity': severity, 'actions': abort_actions.get(severity, {'actions': []}), 'status': 'EXECUTED' } return procedure def contingency_planning(self, resource_data: Dict) -> Dict: """Generate contingency plans based on resource status""" contingency_plan = { 'timestamp': datetime.datetime.now().isoformat(), 'resource_status': {}, 'contingency_actions': [], 'priorities': [] } # Fuel reserves fuel_level = resource_data.get('fuel_percent', 100) if fuel_level < 20: contingency_plan['contingency_actions'].append( 'URGENT: Prioritize essential maneuvers only' ) contingency_plan['priorities'].append('FUEL_CONSERVATION') elif fuel_level < 40: contingency_plan['contingency_actions'].append( 'WARNING: Optimize trajectory planning' ) # Battery health battery_cycles = resource_data.get('battery_cycles_remaining', 50000) if battery_cycles < 5000: contingency_plan['contingency_actions'].append( 'CRITICAL: Plan battery replacement mission' ) contingency_plan['priorities'].append('BATTERY_REPLACEMENT') # Data storage storage_available = resource_data.get('storage_available_gb', 100) if storage_available < 5: contingency_plan['contingency_actions'].append( 'URGENT: Prioritize critical data downlink' ) contingency_plan['priorities'].append('DATA_MANAGEMENT') contingency_plan['resource_status'] = resource_data return contingency_plan def test_monitoring_system(): """Test the post-launch monitoring system with sample data""" monitor = PostLaunchMonitoringSystem() # Sample telemetry data sample_telemetry = { 'orbital_parameters': { 'semi_major_axis': 6878.14, 'eccentricity': 0.001, 'inclination': 51.6 }, 'expected_orbit': { 'semi_major_axis': 6878.14, 'eccentricity': 0.001, 'inclination': 51.6 }, 'power': { 'battery_percent': 85, 'solar_voltage': 32.5, 'power_margin': 25 }, 'communications': { 'last_contact_minutes': 15, 'signal_strength': -75, 'bit_error_rate': 1e-7 }, 'attitude': { 'angular_rate': 0.05, 'pointing_error': 0.8 }, 'thermal': { 'electronics_bay': {'current': 25}, 'battery_pack': {'current': 20}, 'solar_arrays': {'current': 30}, 'propulsion': {'current': 18} } } # Test trajectory verification trajectory_result = monitor.trajectory_verification(sample_telemetry) print("Trajectory Verification Result:") print(json.dumps(trajectory_result, indent=2)) # Test system health monitoring health_result = monitor.system_health_monitoring(sample_telemetry) print("\nSystem Health Monitoring Result:") print(json.dumps(health_result, indent=2)) # Test abort procedure abort_result = monitor.abort_procedure_manager('attitude_control_failure', 'CAT_2') print("\nAbort Procedure Result:") print(json.dumps(abort_result, indent=2)) # Test contingency planning resource_data = { 'fuel_percent': 35, 'battery_cycles_remaining': 8000, 'storage_available_gb': 8 } contingency_result = monitor.contingency_planning(resource_data) print("\nContingency Planning Result:") print(json.dumps(contingency_result, indent=2)) if __name__ == "__main__": test_monitoring_system()