comm_link Class Reference

Geometric intersatellite link model based on S/N ratio. More...

#include <comm_link.h>

Inherits dsim_model.

Public Member Functions
	comm_link (dsim_model_setup *setup)
	Constructor.
void	initialization_complete ()
	Finish initialization.
void	initialize_data ()
	Initialize outlets and output variables.
void	initialize_timestep ()
	Computation done prior to beginning of timestep.
void	pre_calculate ()
	Computation done prior to numerical integration.
void	post_calculate ()
	Computation done after numerical integration.
dsim_value	handle_message (const std::string &sender_path, const std::string &message_name, const dsim_value &argument)
	Process incoming messages. More...

Protected Attributes
dsim_variable	parent_quaternion_dsim
	Parent quaternion.
dsim_variable	parent_position_dsim
	Parent position.
dsim_variable	position_dsim
	Vehicle position.
dsim_variable	power_transmit_dsim
	Transmit power.
dsim_variable	power_receive_dsim
	Receive power (W)
dsim_variable	antenna_receive_gain_dsim
	Receive antenna gain (db)
dsim_variable	antenna_transmit_gain_dsim
	Transmit power (W)
dsim_variable	power_receive_saturation_dsim
	Receive power saturation (W)
dsim_variable	transmit_frequency_dsim
	Transmit frequency (GHz)
dsim_variable	transmit_angle_dsim
	Transmit angle.
dsim_variable	receive_angle_dsim
	Receive angle.
dsim_variable	transmit_dsim
	Transmit.
dsim_variable	boresight_dsim
	Boresight.
dsim_variable	message_outgoing_dsim
	Message outgoing - a matrix.
dsim_variable	message_incoming_dsim
	Message incoming - a matrix.
dsim_variable	feed_loss_dsim
	Feed loss (db)
dsim_variable	guard_bits_dsim
	Guard bits - number of bits that can be wrong.
dsim_variable	antenna_temperature_dsim
	Antenna temperature in deg-K.
dsim_variable	channel_data_rate_dsim
	Channel rate in bits per second.

Detailed Description

Geometric intersatellite link model based on S/N ratio.

Geometric intersatellite link model based on S/N ratio.

You need to enter the antenna gain in db, feeder loss in db the transmit power and the angle of the antenna. Defaults are for an omni antenna with a 1.76 db gain. You pass a message to the model and it sends it to any other comm_link model to which it is attached using the target mechanism. You also input the number of guard or error bits. The model does a link analysis and computes the bit error rate which is used to compute the number of bad bits based on the size of the message an a normal probability distribution function. If the number of bad bits exceeds the number of guard bits you get an empty matrix as your message.

Member Function Documentation

handle_message()

dsim_value comm_link::handle_message	(	const std::string &	sender_path,
		const std::string &	message_name,
		const dsim_value &	argument
	)

Process incoming messages.

comm_link supports the following messages: 'comm_link_message' !

References antenna_receive_gain_dsim, antenna_temperature_dsim, boresight_dsim, channel_data_rate_dsim, guard_bits_dsim, message_incoming_dsim, parent_quaternion_dsim, receive_angle_dsim, and transmit_frequency_dsim.

---

The documentation for this class was generated from the following files:

• comm_link.h
• comm_link.cc