# Presentation: 890759

## A Power-Aware Approach to Processing Payload Design

**Mr. Patrick Shriver, presenting**
*LANL NIS-3 Graduate Research Assistant*

_**Additional Project Team Members:**_
**Dr. Maya Gokhale, ***LANL NIS-3 Deputy Group Leader*
**Dr. Scott Briles, ***LANL NIS-3 Technical Staff*
**Dr. Jayashree Harikumar, ***LANL NIS-3 Technical Staff*

## Presentation Outline

**Power-Aware Systems**
**Motivation and Background to Onboard Processing**
**Power-Aware Payload Concept**
**Payload Simulation (Current Work)**
**Summary**

## Power Aware Computing/Communications

**R&D for smarter power management methods**
- Land Warrior
- UAV/Smart Platform
- Distributed Communication & Sensors
***Space Systems***

**Mission: "JIP: Just In time Power" **
**The *****right***** power at the *****right***** place at the *****right***** time****.**

## Motivation for Onboard Processing

**Improvements in instrument technology are creating *****demanding***** requirements on transmission power**
**Data latency increases the amount of time before *****processed***** data is received by the end-user**
**Onboard science analysis can *****enhance***** autonomous operations and *****improve***** detection capability**

## Roadblocks to Onboard Processing

**Conventional, static power management**
- subsystems are either on/off
- simplified onboard logic monitors threshold levels
**Payload is not essential for survival**
- payload is first to be shut off during anomalous or power restricted conditions

## Power-Aware Approach to Enable Onboard Processing

**Power-Awareness analogous to situational-awareness**
**Multiple levels of operational power modes**
**Dynamically adjust processing states based on the available resources and incoming data rates**

## FORTÉ Mission Application

**Detection of Radio-Frequency lightning events**
**Parameter estimation of Total Electron Content and Time Of Arrival**

**time**

**amplitude**

## Processing Payload Concept

**ADC**

**Analog Trigger**

**Ring Buffer**

**Post-**
**Detection**
**Processing**
**Unit**

** **

**normally accomplished**
**by ground staff at LANL & SNL**

**Chirp Signal**

## Targeted Processing Hardware

**Targeted Processing Hardware**

**Power-Aware Multiprocessor Architecture (PAMA) Board Concept Diagram**

**(diagram taken from ISI presentation at  DARPA PAC/C meeting in Jun. 2002)**

## Algorithm Power Modulation

**algorithm **
**properties**

**available**
**resources**

- APM Decision

- operational
- mode

## Parameter Estimation Performance

- Increased accuracy requires a corresponding increase in energy.

## Signal Detection Improvement

- Post-Processing can reduce the probability of false alarms, but with an additional cost in energy consumption.

## Current Work

**Software simulation of payload concept**

_**Battery Module**_
-  voltage/capacity consumed

**Lightning Event **_**Module**_
- lightning event rate

_**Processing Payload**_
- simulate processor power consumption with APM decision process

## Summary

**Need for onboard processing, but limited by traditional power management**
**Power-Aware approach can help enable onboard processing**
**FORTÉ detection of lightning signals used for concept application**
**APM management of resources through algorithm selection**
**Currently developing software simulation of concept**